At Fenton Works, Sam was helping Maddie out in the basement lab. Her friends Danny and Tucker were out doing secret business (catching ghosts), which left her alone to do their part of the work. She didn't mind that much, but it was still kind of irritating. Currently she was moving boxes while Maddie worked on some unknown device.

"I really appreciate your help, Sam." Maddie said.

"Oh, its no trouble, really..." Sam said, a hint of annoyance in her voice. Unknown to her, her rear end was right next to a syringe containing a purple liquid...

"Hey Sam, something dropped on the floor there." Maddie said. Sam bent over to pick it up, but then felt a pain in her butt!

"YOW!" Sam said, standing up quickly. "What was that!?"

Maddie looked at Sam, and was shocked to see a syringe poking into her, with the plunger down!

"Oh no, this isn't good!" Maddie said, pulling the syringe from Sam's butt. "You've been injected with an unknown, unstable chemical!"

"What!?" Sam said. "What do I do!?"

Suddenly Sam felt something weird coming from her butt...