"I can't get it open." Timmy says as he is trying to get a drain hole in the floor before Alexis helps him move the lid.
"Come on Tim let's go. We got no time to waste." Jenny says as the group gets into the room.
"This way." Alexis says as the group begins walking.
"So this is NIMH. Wow this is really creepy." Timmy says.
"Oh this is nothing. Trust me living here is far worse." Alexis says.
"Come on let's go." Jenny says as the group keeps moving and finds a bunch of humans in a cage.
"Jenny, Alexis look! What happened to them?" Timmy asks as the group looks at the humans.
"Dr. Valentine is mad. He's turned the humans into dogs. No offense Alexis." Jenny says as she looks at Alexis.
"None taken. But this is pretty disturbing." Alexis says.
"Come on. Let's find my parents and get out of here." Jenny says as the group goes up some stairs.
"It's so quiet." Timmy says as the group stops at the top of the stairs.
"Too quiet." Jenny says as the group goes toward an elevator and stops seeing someone is about to come out of it.
"Someone's coming!" Alexis says as the group quickly hides as some large rabbits come out and march off.
"Those are the biggest rats I've ever seen in my life." Timmy says.
"Yeah well keep an eye out Tim. Those rats are nothing compared to what lies in wait." Alexis says as the group goes through a mail slot into another room.
"There." Jenny says as the group runs toward a door only for two rats to come out in front of them.
"Run girls run!" Timmy says as he jumps on one of the rats before it grabs him.
"Hold on Tim! It's okay." A voice says revealing to be Justin and four other rats.
"Justin? What are you doing here?" Timmy asks as Alexis and Jenny walk over.
"We decided Jenny and Alexis are right. The lost six belong in Thorn Valley. So we came here to help rescue them. Watch our backs." Justin says.
"Not again!" Timmy says angrily.
"Will you listen?" Justin asks annoyedly as everyone but Timmy follows Alexis and Jenny into the room and finds the McBrides in a cage with four other mice.
"Mr and Mrs. McBride!" Alexis says happily.
"Mom! Dad! You're all right!" Jenny says happily.
"Jenny! Alexis! You shouldn't have come back. The moon is full tonight. We're all in danger." Mr. McBride says worriedly as he comes over to the bars.
"We'll have you all out in a second." Justin says as the other mice come running over to the bars.
"Justin. Is that really you?" A female mouse asks.
"To the rescue. Let's get you out of here." Justin's says before the group gets grabbed by some cats.
"I'm so sorry. Did I startle you?" The female cat asks as she smiles.
"Tim! Cats!" Alexis shouts as she and Jenny get grabbed by a male cat before the male cat sees Timmy and grabs him as he tries to back out the door.
"No you don't. No my little scrumptious scone. Come here." The male cat says as he tries to eat Timmy only for the female cat to make him spit Timmy back out.
"What the... What are you thinking?" The female cat asks.
"But they make such a lovely stew. A few carrots, some nice greens..." The male cat says before the female cat grabs the group from him.
"The good doctor will make a stew out of us if we hurt them." The female cat says angrily.
"I don't want to hurt him. I merely want to eat him." The male cat says before he grabs Timmy.
*Timeskip*
*I'm sorry, everybody. It's my fault. I wasn't a team player." Timmy says as the group is taken to a room while tied up by rat soldiers.
"Here you go boss." The female cat says as the group is brought to an elderly scientist man.
"Dr. Valentine!" Jenny and Alexis says worriedly.
"More recruits!" The female cat says.
"Yes and we didn't eat any. I wanted to make a lovely stew..." The male cat says before a ball flies over onto the ground as a dark and deranged looking mouse with a cane and robe come over after he gets off a machine.
"Dr. Valentine fetch! Little you have grown." The mouse says as Dr. Valentine acts like a dog and goes after the ball.
"Who..." Timmy says confusedly.
"You bruise me. I suppose I have changed a bit. But for the better don't you think hero?" The mouse asks as Timmy gives a surprised look.
"Martin?" Timmy asks in shock.
"Not quite brother. It's me. The new-and-improved Martin." The mouse says.
"What's wrong? What's happened to you?" Timmy asks worriedly.
"Happened? Why, life happened, that's what!
And I made the most of it. Don't you think?" Martin says as he begins singing about how he took over NIMH and wants Timmy to join him.
"No!" Timmy shouts angrily as Martin stops him from falling off a ledge.
"Wrong answer." Martin says before he let's go of Timmy as he falls and gets caught by the male cat.
"I say I've caught a mouse. Hi. May I devour him, your vileness?" The male cat asks as Martin comes over.
"No! For now maybe something a bit more accommodating for a long lost brother. I know! A ringside seat. So you can watch me unfurl my master plan! Tonight the moon is full and I attack Thorn Valley! Your soon-to-be-zapped friends will be my willing soldiers. Quite a shock. No pun intended." Martin says as Timmy gets put in a metal cage.
"Timmy!" Alexis shouts worriedly.
"You're insane!" Jenny shouts angrily.
"Thank you. Now she has real spunk. Not like you hero. She has real potential. Take her to my personal chamber." Martin says.
"Jenny! No leave her alone!" Alexis shouts angrily.
"Take the little blonde one as well. She can have a front row seat of what I will do to her friend. As for her friend she'll make a perfect queen for my new realm. Her attitude just needs a slight alteration." Martin says as the female cat takes Alexis and Jenny away.