The moving of the Brisby house was underway. The rats set up an elaborate system of ropes, pulleys, and a huge wheel powered by about 30 rats marching in a circle. Slowly, the cement block started to rise out of the mud. Inside the Brisby house, the children were trying to keep things from getting knocked about too badly while Auntie Shrew was having a panic attack. "Teresa!" Auntie Shrew called out only to get knocked out cold as a marble fell on her head. "Martin!" Teresa called out. "Auntie's afraid!" Cynthia grinned. The house reached the necessary height as the rats began to move it transversely. "Pull on the end-haul. Careful," Justin instructed. "Careful! Easy does it... Keep it up!" Nicodemus was standing on the stone, supervising the operation. Jenner and Sullivan lurked near the ropes anchoring the apparatus to the stone and they all carried their own swords. "Nicodemus is cooperating beautifully..." Jenner remarked. "Jenner?" Sullivan spoke up nervously. "He's standing in just the right spot!" Jenner continued. "Jenner, I... I can't do it!" Sullivan gulped. "When that block reaches midway, you cut the line." Jenner told his right hand rat. "Come on, mates!" Justin soon called out. "Put your backs into it!"

Maika, Ema, and Mrs. Brisby soon found a paperclip and tried to use it against the door. "Come on, come on, come on!" Maika pleaded as Mrs. Brisby tried to use the paperclip. But unfortunately, it didn't work as it cut Mrs. Brisby. Mrs. Brisby held her paw, seeing blood on her. Then Ema noticed a water dish and had an idea. She started to push the water dish out. Ema jumped into the water, but the dish was pushed too far forward for her to fit through the gap on the other side. Then she got out, ran to the far side of the cage, and took a flying leap at the dish. "Oh, dear, be careful!" Mrs. Brisby warned Ema. Ema nodded to Mrs. Brisby, telling her that she would be careful. The dish shifted a little, and Ema made it out. Maika made it out too, but Mrs. Brisby was unable to make it through. "Maybe I can bend a way open." Ema said before doing just that. Mrs. Brisby stepped back a bit. "Don't worry, I'll get you out of there soon." Ema promised before she finished. After Mrs. Brisby was let out, the three mice got themselves down to the floor and luckily, Dragon wasn't going to wake up for a while. "Now that was bravery, Ema." Maika said. "Thanks Maika" Ema smiled.

Jenner watched the block's process carefully. "Ready with the knife..." Jenner said. "Ready... Cut now!" "I... I..." Sullivan stammered. "Now! Cut it!" Jenner demanded. "No!" Sullivan protested. "Then I'll do it myself!" Jenner said as he began to cut the mouse-sized rope. The Brisby home crashed to the ground. Inside the Brisby home, all was bedlam with the furniture flying. A candle tipped over and it began to set the home on fire. Luckily, a washbasin slid the same way as the candle, and overturned, putting out the fire. Outside, a crowd of rats, led by Justin and Mr. Ages, desperately fought their way into the wreckage. "Okay, help. We've got to hurry! Come on, come on!" Justin said before stopping dead in his tracks in horror. "Nicodemus... Oh, no! NO!" Nicodemus's paw was shown, limping from within a pile of rubble. The three mice made it out to safety from the Fitzgibbons' home. "We should be close to my home soon." Mrs. Brisby said. "I sure hope so," Maika replied. "I also hope your son Timmy is okay." "Oh, I hope so too, dear." Mrs. Brisby said. "He has to be." said Ema. Then they yelped as they came face-to-face with Dragon. Luckily, Dragon was still fast asleep and didn't even see them, giving them a breath of relief. "Whew..." Maika sighed. "That drug is doing great." The three mice got closer into the kitchen before they would leave the house. Mrs. Brisby took that time to stop to collect her belongings.

Meanwhile, the rats had met around the Brisby home. "Friends, we cannot move the Brisby home." Jenner told his fellow rats. "The equipment is a shambles." "Justin!" Mrs. Brisby's voice called out in the distance. "One day we shall journey to Thorn Valley just as Nicodemus wanted, but not now." Jenner continued. "Mrs. Brisby...?" Mr. Ages asked. "Come. Let us return to the rosebush," Jenner suggested to the others. "Where we belong." "What happened? Where's Nicodemus? And Mrs. Brisby's children?" Ema asked. "They... They're fine," Mr. Ages replied. "Nicodemus is... Dead." "Oh... Oh, no..." Mrs. Brisby grew distraught. 'If only we had gotten out sooner.' Ema thought to herself. "We don't have much time to waste. NIMH is coming!" Maika reminded everyone. "Come, come, let's return to the rosebush..." Jenner quickly told the others to distract them. "Maika is right," Mrs. Brisby said. "NIMH is coming!" "NIMH?!" One of the rats asked out of fear. "In the morning!" Mrs. Brisby soon exclaimed. "NIMH?" A rat asked nervously. "Yes. You will all die unless you leave the farm tonight." Ema told them. "Lies!" Jenner glared. "We're telling you the truth!" Maika told them. "Please! You must believe us!" Mrs. Brisby added. The rats got into a panicking clatter. "What if it's true?" "We'll all be killed!" With a vicious backhand, Jenner sent Mrs. Brisby flying, shucking his cape and soon drew his sword. "You get out!" he glared at the widowed mouse. "I've had enough!" "Mrs. Brisby!" Maika and Ema cried out. "Jenner!" Mr. Ages cried out as he tried to block Jenner's path. Jenner swept him to one side with a snarl and lunged after Mrs. Brisby as Sullivan ran to get Justin. "Justin! Justin!" Sullivan cried out to the brown rat. Justin saw what was happening, and ran between Jenner and Mrs. Brisby. "Jenner, stop this!" he glared at the evil rat.

The amulet around Mrs. Brisby's neck soon glimmered in Jenner's eyes. "The Stone..." Jenner whispered, feeling entranced. "Jenner..." Justin warned his fellow rat. "Get out of my way!" Jenner glared, pushing Justin backward, and slashed at him with his sword for good measure. The sword connected with Justin's arm, making the brown rat grimace with pain. "I want that Stone!" Jenner glared as went towards Mrs. Brisby. "Sullivan, toss Justin a sword!" Maika called out. "All right!" Sullivan replied as he went to do that. Justin soon fought Jenner in the mud until Sullivan came back. "Justin! Justin, my sword!" Sullivan cried out as he then threw Justin his sword. Jenner, in fury, slashed Sullivan open, making him fall to the ground, still breathing... For now. Maika and Ema took this chance to save Mrs. Brisby. The two girls ran until they lunged out and tackled down Jenner as he tried to get the amulet from Mrs. Brisby. "Maika! Ema" Mrs. Brisby gasped. "Mrs. Brisby, run!" Maika and Ema told her. Mrs. Brisby got free and went to run off. Justin soon came to take care of Jenner. "You did it! You killed Nicodemus!" Justin glared at Jenner. "That was no accident!" "Yes. I killed him!" Jenner glared back as the fight continued. Justin struck furiously at Jenner, but Jenner's greater size and strength finally sent Justin tumbling from the top of the rock face down into the mud. Jenner descended from the top slowly, savoring the moment. "He wanted to destroy everything!" Jenner continued from what he was saying. "I've learned this much: Take what you can, when you can!" "Then you've learned nothing." Justin glared. Jenner raised his sword to strike, but Justin got his feet under a piece of wreckage and kicking it up, blocking Jenner's path. Justin got up again as the fight briefly continued until he struck low under Jenner's sword, piercing him in the belly. Jenner screamed and dropped his sword.

A short distance away, Sullivan was still breathing weakly. Justin turned to the rest of the rats, and threw his sword away. "Friends, tonight we journey to Thorn Valley," he then told them. "We will leave no tracks. No evidence that the Rats of NIMH ever existed... Come." Unknown to Justin, Jenner was above him ready to strike him. Mrs. Brisby pointed and gasped, trying to tell Justin what was going on right behind him. Luckily, Justin whirled right as Jenner raised his sword to strike, but Sullivan pulled a dagger from his belt and with the last moment of his life, he threw it into Jenner's back. Jenner let out a yell as he toppled from the stone and fell to the ground, dead. Then everyone heard some bubbling under the mud as the Brisby home started to sink. "Oh, no..." Maika and Ema frowned, feeling like they had failed their mission. "Hello, is anybody up there?" Martin's voice called out. "Martin?" Mrs. Brisby asked as she ran up to the side of her house. "Mama!" Martin called to her. "Mother, are we almost moved?" Teresa asked. "Soon, now..." Mrs. Brisby said before burying her face in her paws in despair until she realized something. "It's sinking... It's sinking... Justin, the block! It's sinking!" This caught everyone's attention. "What?" Justin asked until he saw the block sinking and jumped into action. "Come on!"

Everyone rushed over to help out the Brisbys since this wasn't a happy sight for any of them. The other rats swarmed in to the block to continue helping out even if the situation looked hopeless. "There must be a... A cave in below!" Mr. Ages suggested. Justin joined Mrs. Brisby on top of her home "Here, tie these lines together. I'll get a line around the stone," he suggested. "Brutus, quick, get some rope. Tie off those block-lines. Hurry it up, come on! Move it!" Soon, the Brisby home was rapidly filling with muck. "Mother! Mother!" Teresa cried out. "What's all that black stuff?" Cynthia then asked, seeing the muck. "Come on, Teresa, get up on the table!" Martin told his older sister before glaring down at his younger sister who had clung to his leg. "Cynthia!" "What about Timmy?" Teresa frowned. "Get us out of here!" Martin told her. "Mother!" Teresa then cried out. On top of the block, one of the makeshift lines snapped. Justin used that time to run to the bank to get more rope, leaving Mrs. Brisby on the block alone. "Another line! Get some rope! Hurry!" he then commanded. "Justin!" Mrs. Brisby called out to the rat. Justin threw Mrs. Brisby a line as the block had sunk so far that anyone approaching risked being sucked down. Then the the amulet around Mrs. Brisby's neck started to glow. Maika and Ema remembered what Nicodemus said. "Courage of the heart is very rare" Maika began. "The Stone has a power when it's there." Ema finished. Mrs. Brisby held onto the amulet but only for a while before she let it go as it burned. Then a deep power seemed to consume her.

"Elizabeth, I know you are braver than you think you are..." A male familiar voice told the widowed mouse. "I've always believed in you... You're a wonderful mother... A great wife... I miss you every day, and I know you can be as brave as I was for our children and everyone else outside of Thorn Valley." The rope connecting to the Brisby home soon floated up to Mrs. Brisby. Maika and Ema looked worried as they didn't know where this was going. Mrs. Brisby grabbed the rope and the power of the amulet ran down it into the mud. Soon, the mud was glowing and churning as the block raised up with light streaming from it in all directions, finally floating free above the ground. Mrs. Brisby guided it over to the hole prepared by the rats, and lowered it into place. "Mrs. Brisby!" Maika and Ema yelped as they gathered around the widowed mouse who seemed to had passed out in the middle of the ground. Mrs. Brisby let out a small groan as she woke up, but she wasn't back home, she found herself in a special plain. "Elizabeth... I'm very proud of you..." A voice spoke to the widowed mouse. "Jonathan?" Mrs. Brisby asked.