Gregor rubbed his head in confusion. Was this Ripred's idea of on-the-job training? Had that thing about Luxa been just a test? Was she really okay? Gregor wanted to ask, but he was pretty sure Ripred would knock him into next week if he did.

  "Get up!" Ripred repeated with even less patience.

  Gregor sprang to his feet. Ripred had the center point of the arc again. On his left was a woman Gregor recognized, Perdita. She had almost been killed the very first night Gregor had fallen to the Underland. He had tried to escape, ran into two rats on a beach, and was rescued by a party of humans and bats. Perdita had been badly injured that night. But she'd recovered from her injuries since then, and Gregor had trained with her. She fought with a sword and a dagger and could hit almost as many bloodballs during drills as Gregor could, which made her one of the Regalians' top fighters. On Ripred's right was a man who Gregor had never seen before. He would have remembered him, too, because he must have been close to seven feet tall. With both hands he wielded a thick broadsword that would easily have come up to Gregor's shoulder. He hollered a lot when he fought.

  "By me!" Ripred ordered and flicked his tail to indicate where Gregor should fight next to Perdita.

  "She lives, Overlander!" said Perdita as he stepped into place, and she managed to shoot him an encouraging look between attacks.

  "Thanks," said Gregor. He was at first grateful, then embarrassed because he realized Perdita now knew about him and Luxa. Maybe everybody knew. But Ripred was right. He couldn't think about that now. He had to focus on the battle.

  Gregor wasn't the only one joining up with the forces at the tunnel mouth. Both the humans and the rats seemed to be directing all of their soldiers there. There was no time to ask for an explanation of the battle orders. It was all he could do to keep alive.

  He knew Ares was an excellent fighting partner, but the bat was proving to be quite remarkable in his own right. Since so many of the humans were now fighting on the ground, their bats were executing a full-scale aerial attack on the rats. Mainly they would dive down, rip a clawful of flesh from a rat's backside, and whip quickly back into the air to escape damage to their wings. But Ares was one of a handful of bats with the strength to lift a full-grown rat off of the ground and drop it to its death. Again and again he picked off the deadliest fighters, saving many humans besides Gregor. And as the battle continued, Gregor could hear desperate people begin to call out, "Ares!" hoping for a last-minute rescue from a rat attack. Despite the grim circumstances, Gregor could not help taking satisfaction that his much maligned bond was finally getting some appreciation.

  It was hard to tell how much time had passed -- thirty minutes, maybe forty-five -- when people began to call, "The nibblers are in! The nibblers are in!" He guessed this meant that all of the nibblers had made it into the tunnel. He'd yet to get a good look at them, so he had no idea what condition they were in. Pretty bad, probably.

  A few minutes later, an order was given to retreat into the tunnel. Ripred took a second out to growl, "Not you, boy!" at him, so Gregor just held his position. This was getting trickier by the moment because he was now up to his knees in bloody ash, and keeping a foothold was harder than ever. Around him, humans and bats carrying wounded began to make for the tunnel. He heard repeated cries of "No torches! No torches inside!" and could only wonder what that was about. Those carrying torches hurled them like javelins into the army of rats, causing some welcome disruption.

  Retreat seemed to be something the humans and bats could execute quickly, because in a matter of minutes, only twenty or so were left defending the tunnel mouth. Then they, too, under the tremendous pressure of the rats, began to slowly fall back. Soon, even the front line, still composed of Perdita, Gregor, Ripred, and the giant man Gregor didn't know, was forced into the tunnel.

  "Fliers, go!" Perdita called. Ares and the last two bats swept across the rat army, peppering them with torches, and then dove into the tunnel.

  Gregor had backed only a few steps into the tunnel when he knew he was going to run into trouble. "Why no torches?" he yelled, but no one had time to respond. Maybe there was some plant in the tunnel that was flammable. Some weird moss or something. The light from the cavern was growing faint. That meant he was going to have to rely entirely on the flashlight taped to his arm to see. He clicked the switch to turn it to high beam and was reassured by the amount of visibility it restored. But what about the others? Ripred didn't need light to fight. He could "see" by echolocation if need be, as could the oncoming rats. Perdita could probably get by on what his flashlight was putting out. But that big guy with the broadsword on the other side of Ripred, he was going to have problems.

  "Retreat! It's too dark for you!" Ripred said to the man, whose only response was a string of curses.

  Gregor yanked his spare flashlight off of his belt and turned it on. "Hey! You on the end!" he yelled. No response.

  "York," Perdita prompted him.

  "Hey, York!" said Gregor. The man looked over and Gregor tossed him the flashlight. "In your teeth!" he instructed. There was no time to tape it to York's arm or even explain what the flashlight was. But York seemed to get the idea. He yanked off his mask, crammed the end of the handle between his teeth, and kept hacking away.

  Somewhere behind him, Gregor supposed, were backup soldiers, but he never saw them. As the rats drove them deeper into the tunnel, all of the light disappeared except the beams from the flashlights. And between handling his own rats and trying to keep Perdita from falling into darkness, there was no time to turn his head. He was still managing, but in this gloom, could it be that some of his confidence was slipping away? A rat's tail came frighteningly close to taking out his flashlight, cracking the glass. A claw caught the duct tape, almost ripping it free. Gregor realized they were targeting his light. They must know, after his humiliating encounter with Twirltongue and her pals, that he was worthless without it. He ripped off his mask, pulled the flashlight free, and stuck it between his teeth as he had instructed York to do, just barely blocking a tail that came straight for his mouth. The bulb was beginning to dim. He could feel the power draining out of him and the seeds of fear beginning to grow. What should he do? Tell Ripred? Keep fighting? Cut and run? Because frankly, if his rager abilities left him he was just another twelve-year-old kid who'd had a few sword lessons. And, as he was realizing, a really tired one at that.

  A rat claw got through his defenses and opened up a cut on his calf. The tip of a tail made contact with his flashlight and knocked the beam sideways. As Gregor straightened it, another claw tore through the laces on one of his shoes.

  "I can't hold on!" Gregor wanted to scream, but the flashlight made it impossible to talk, anyway. But he had to at least let someone know that he was fading, that they couldn't count on him, that --

  "Hey!" Gregor yelped as his feet flew Out from under him. He landed on his back in a pool of thick, slippery liquid and came up sputtering.

  "Run! All of you!" snapped Ripred, and began a spin attack.

  What was going on? Gregor scrambled to his feet and saw -- by the light of York's flashlight, his own having dropped somewhere into the pool when he cried out -- that York and Perdita had not hesitated to follow Ripred's instructions. So Gregor ran after them as well.

  That is, he tried to run, but he was doing more wading than anything else. The floor sloped down and the liquid rose up to his chest. It was all he could do to sort of bob forward. York's light showed they were in a shiny, black pool that filled the floor of the tunnel. "Oil," he thought. What else could it be? Gregor held his sword high over his head as he went along, hoping the stuff wouldn't get any deeper. Moving forward, moving forward, until there it was. The light at the end of the tunnel. Literally.

  The pool became shallower and now Gregor could run, but carefully, carefully because the stuff was so slick. He went toward the light, breaking out of the tunnel but still up to his knees in oil. Before him lay a huge cavern, at least a quarter-mile long, that was mu
ch less dusty than the one they had battled in. At the far end were lit torches but they were placed very high on the walls. Huddled far below on the ground lay hundreds upon hundreds of mice.

  Gregor didn't know exactly what was happening, but he got a grip on the blade of his sword and began to sprint. This was one thing he could do, whether he was raging or not. He could hear his track coach's voice coming from what seemed like another lifetime, calling pointers to him. The oil disappeared, his sneakers hit cinders, and he accelerated.

  Humans on bats were flying by, picking up mouse stragglers and wounded. Ares flew in for him but Gregor waved him toward the mice, some of whom were unable even to get to their feet. Suddenly the cinders vanished and he was wading again, this time through a shallow river with a current. He plucked a struggling mouse pup from the water and hoisted it onto his shoulder. Fortunately it was able to cling there on its own because his arms were soon full of a second pup. As he came to the bank at the far side, hands reached for the pups and pulled him up onto a beach.

  Gregor collapsed, gasping for breath. He looked back across the cavern. The last few mice were being lifted from the ground and flown here. Three humans on bats were jetting toward the tunnel with the black pool. They each carried a bow in one hand and a flaming arrow in the other.

  "Shall I give the signal, Your Highness?" shouted a voice.

  "Not yet." Gregor could barely make out the hoarse voice. He turned and there was Luxa, just a few yards behind him, eyes fixed on the tunnel. She was drenched in oil and so weak she had to support herself on a rock.

  "Now, Your Highness?" The voice was tense with urgency.

  "Just give him a few more moments," said Luxa. "There!" Gregor looked back, straining to see the tunnel opening. A large, glistening form barreled out of the mouth and made for them. Ripred. Any second now, the army of rats would be after him.

  Behind him, Gregor could hear Luxa whispering, "Wait for them, wait for them." Then, as the first rat heads appeared, he heard her say quietly, "Now."

  A signal must have been given because the three archers shot their flaming arrows into the pool of oil spilling out of the cave. As the first made contact, a ball of flame burst toward the ceiling, igniting the rat army. Gregor knew it must have blasted back into the tunnel, across the pool, incinerating everyone in its path. For a moment, he couldn't help thinking of what that must have meant, the rats burned alive, the black smoke suffocating those who had been far enough up the tunnel to escape the fire, the horror of it all.

  Then another danger arose. So much oil had been dragged across the cavern that the fire spread toward them as well. Although it was not as fierce, it would be deadly if it caught on any of their oil-soaked bodies.

  Gregor sprang to his feet. "Ripred? Where's Ripred?" he shouted, only to see the big rat splash into the river before him. He looked up to where Ares was circling overhead.

  Ripred slowly dragged himself onto the beach and surveyed the scene. There was no trace of the rat army, only a roaring fire before the tunnel. The flames had stopped at the far side of the river, cut off by the water. They were safe. "Now whose idea was this?" he croaked out.

  "Queen Luxa's," said a nearby Underlander.

  Ripred turned his head, spotted Luxa leaning against the rock, and glared at her a moment. Then he gave her a nod of approval. "Good plan."

  Luxa opened her mouth to answer but instead began to cough into her hand. It was a horrible, rasping cough that shook her entire body. When she removed her hand from her mouth, it was covered in red. She stared at the blood for a moment, as if faintly surprised, and then collapsed to the ground.

  ***

  CHAPTER 6

  A dozen people ran for her but Gregor reached her first. "Luxa? Luxa?" He could not keep the desperation out of his voice. He rolled her onto her back and gently propped her head up on his lap. She was still conscious, but barely. Another wave of coughing racked her body and fresh blood ran from the side of her mouth.

  An Underlander, dressed in white to signify that she was a doctor, uncorked a bottle and held it to Luxa's lips.

  "Look at her! She should have been sent home days ago!" bellowed a man. Gregor looked up and saw York striding toward them.

  "We could not make her go," another voice rasped out. Howard, who seemed nearly as bad off as Luxa, crouched down to wipe his cousin's face with a cloth.

  "You are still here as well?" asked York in exasperation.

  "I was needed," said Howard faintly. "So many wounded, Father."

  Father? So this giant of a man was Howard's dad? Gregor tried to remember what he knew of him. He was the governor at the Fount. He had been kind to the mice. Not much else.

  "You are no help like that. The pair of you! To Regalia! Now!" He raised his head in the air. "I need a flier with some life in it!" shouted York.

  Ares fluttered to the ground. "I have life," said Ares. "I have been in the ash but a few hours."

  "We can take them," said Gregor. "He's really fast."

  York gave them each a piercing look and then handed Gregor back the flashlight he'd used in the cave. "Load them up!" he ordered, and lifted Luxa in his arms as if she weighed no more than a doll.

  Gregor scrambled onto Ares's back before anyone could say he couldn't go.

  "It would be best if she could remain sitting up," said the doctor. "Easier for her to breathe." York placed Luxa in front of Gregor. "Can you keep her upright?"

  "Yeah," said Gregor. He wrapped his arms around her waist and pulled her back so her head was resting on his shoulder. "I can do it."

  "Give her sips of this when the coughing resumes," said the doctor, and pressed the corked bottle in Gregor's hand. "Howard will advise you. Other than that, her hope lies in getting to the hospital in Regalia."

  As Howard was being lifted onto Ares's back, Luxa began to struggle. "Aurora ..." she said.

  "On my own flier, niece. She will be right behind you," said York, smoothing back Luxa's hair.

  "Ripred," Luxa got out. The rat appeared and stuck his nose up to hers.

  "Right here," he said.

  "The nibblers. If I die ..." said Luxa.

  But Ripred cut her off. "You? Die? You're too mean to die." Luxa actually managed a smile. "But don't worry, Your Highness, I'll look after them." Ripred nudged Ares with his head. "Fly you high and fast."

  Ares lifted into the air and shifted his powerful wings into high gear. They did not need to take the secret, winding tunnels that had brought them here. But even though they flew through the main thoroughfares, the trip was excruciatingly long.

  Nothing Gregor had experienced in the battle came close to filling him with the terror he experienced on the flight home. Luxa was so ill -- barely able to breathe, wounded in several places, burning up with fever -- that at times he truly doubted she would make it home alive. At one point, in fact, when she became very still, he thought he had lost her. "Luxa!" he cried out and gave her a shake, and she began to cough again, bringing up more blood but still with him, still there.

  "Talk to her, Gregor," said Ares. "As you did to me in the currents."

  Once, when they had been caught in a web of powerful air currents, Ares had nearly gone insane. Gregor had launched into a nonstop monologue to distract the bat and keep his spirits up. And so he began to talk to Luxa about anything and everything he could think of. New York City, funny things Boots had done, a paper he had written on spiders, what winter was like, Mrs. Cormaci's recipe for spaghetti sauce -- anything -- anything to keep her from drifting away.

  Somewhere behind him, Howard lay in the darkness. Gregor was reminded of his presence by an occasional cough or an order to dose Luxa with more medicine. But as poor as Howard's condition was, he was able to stay conscious, unlike his cousin.

  After what seemed like an interminable amount of time, Gregor began to recognize the landmarks around Regalia. They were flying down the wild river that ran from the Fount past Regalia to the Waterway. Only it didn't look as
wild as Gregor remembered it. The surface was not churned to a white froth -- it was several feet lower than usual. The earthquake that had altered the landscape by the mouse colony near the Fount must have affected the river flow as well.

  "Almost there now," he told Luxa. "Almost home." She made no response. She hadn't even coughed in probably an hour. But he could still feel her chest rising and falling.

  Ares flew directly to the dock on the river. Even before they had landed, Gregor was yelling, "Help! Doctor! Medic! Help! Help!" Underlanders unloaded Luxa and Howard directly off of Ares and onto stretchers. They tried to place Gregor on a stretcher as well but he pushed them aside and ran after Luxa. She was whisked into some kind of emergency room, surrounded by a team of doctors snapping orders. Gregor tried to see what was going on but was unceremoniously shoved out of the room. A stone door swung closed in his face.

  He stood in the hall, panting and trembling, brushing aside the doctors who tried to treat him. It was not until Mareth appeared and grasped him firmly by the arms that he began to come back to himself. "Gregor," said Mareth. "You have need of medical assistance as well. You must come with me."

  "Is she going to live?" asked Gregor.

  "I cannot say. But she is getting the best treatment we are able to give. You do not help her, or anyone, by letting your wounds inflame," said Mareth. "Come."

  Then Gregor was in one of those herbal baths again, soaking the oil and ash from his skin. The rats had gotten him good in a few places, particularly the one who had cut his calf open in the cave. He was stitched up and rubbed down with salve but he pushed away the medicine that he knew would make him sleep. Mareth took care to see that the photograph of Gregor and Luxa made it into the pocket of his new shirt, that his sword was propped up against his bed. But Gregor insisted on getting up. Ordinarily, that would not have been allowed, but the hospital was becoming flooded with human and nibbler casualties and no one had time to deal with him. He prowled up and down the halls, trying to get news of Luxa but hearing very little. Periodically he stood at the window to his mother's hospital room -- she looked better at least -- watching her sleep. Then he'd pace the halls again.