Phineas dashed down the dark corridor, hoping he wouldn't slam into a wall. He took one look behind him and saw a red glow close behind.

He gasped and ran even faster. He suddenly tripped and crashed into the wall.

He moaned and quickly tried to get to his feet, but felt something metal close around his neck.

He felt himself become lifted off of the ground, and in Dark Ferb's claw. The mechanoid human chuckled evilly and walked back the way they came.

Phineas wanted to call for help, but he was barely able to breathe, let alone shout.

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Isabella sprinted down the hall, and came to a door.

"Oh, I must have lost them!" she said, disappointed that her friends were no where to be seen.

She heard rapid footsteps behind her, and opened the door and slammed it shut; she looked at the room she was in.

It was frigid, and a white mist covered the floor. Isabella looked down and couldn't see her feet. A huge spherical machine with blue holes was in a circular alcove, held by multiple black tubes. The mist flew from the ports on the machine as it pulsed periodically.

She heard scratching on the door behind her, and thought that maybe her pursuer wouldn't be able to see her in the fog. She hit the floor just as the door melted away.

Dark Perry walked in with a green liquid oozing from his mouth, burning the floor it touched. He slurped it all up, then flinched as he met the cold air.

He sneezed, and patted his bill with his right arm. He had completely lost all feeling in it, but he could still catch scents, but barely. He would have to get close, and get out of here fast before his body went numb.

He planted his bill on the floor and began to sniff like a bloodhound. He began to lose feeling in his front legs.

Isabella heard the sniffing, and stayed as perfectly still and quiet as possible. She heard Dark Perry's footsteps approaching, and looked down. She couldn't see past her chest, and hoped that she would feel him before he could feel her.

Suddenly, she felt something on her stomach: Dark Perry's bill. He swept it quickly across her stomach, as she desperately tried not to laugh.

Just as the platypus thought he caught a scent, Isabella cracked. She burst out giggling, alerting Dark Perry that she was in front of him.

The platypus growled, and Isabella punched the air, and Dark Perry's face,and dashed behind the large ice pumper.

Dark Perry saw the girl, but he wasn't going anywhere near that accursed machine, and he knew how important it was, so he couldn't risk Acid-Blasting it.

He snarled and left the room, while Isabella peeked to see him leave. She was trapped. She would most likely be torn to pieces if she tried to leave, but in here, she would freeze to death. She sat against the pumper, shivering.

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Ferb ran down the hall, only the blue perimeter lights on the floor lighting his path, and ran straight into a wall. While he didn't hit it hard enough to knock himself to the floor, he did become dazed for a moment. He felt the wall, and felt a large handle.

He turned it and opened the heavy door, ran inside, and shut it behind him. He leaned against the door, and caught his breath. Deciding to run again, he turned, and shouted upon seeing Dark Isabella.

"What? Are you running from me?" she said in the sweetest voice possible. "You must be. I mean, what else is there to run from, right?"

"What do you want?"

"Oh, I just have a little deal for you," she walked up to him and put her bony hand on his shoulder. "How about, you help me with what I need, and I get you back home safe and sound?"

Ferb simply stared annoyed. Dark Isabella walked behind him.

"Please?" she said.

Ferb blinked, then looked at her.

"Fine. Whatever it is, I'll do it."

Dark Isabella smiled.

"Okay, follow me…" She led Ferb down the hallway, the five tentacles on her back bobbing with each step…