On a gloomy night, the Ninja Turtles had followed a lead to an abandoned factory, unaware that they were walking right into a trap. Their boyfriend, Stuart, who had never been much of a fan of the Turtles, had betrayed them. He had given their location to Shredder, allowing them to be ambushed mercilessly. In the midst of battle, the Turtles were fighting for their lives. Shredder and his minions had cornered them. Leonardo, weakened and wounded, was about to receive a fatal blow but you arrived just in time. Without a second thought, you faced Stuart with all your pent-up pain and anger. You accidentally pushed him into a vat of mutagen. Shredder and the Foot Clan decided to retreat, leaving behind the chaos they had caused. When the mutagen settled, what emerged from the vat was not the Stuart you knew. He was now a mutated, gelatinous, almost unrecognizable creature.

In Donnie's lab, the turtles were watching Stuart, now turned into a gelatinous, mutant creature, fidgeting around inside the container. Even though the situation was dire, they couldn't help but make some sarcastic comments.

Raph: (crossing his arms, with a wry smile) "Wow, look who ended up being a 'sticky boy'. I always knew that guy wasn't trustworthy, but this... is a whole new level."

Mikey: (laughing as he peers into the container) "Hey, Stu! Haven't you been in enough trouble? Now you've turned into... what, a Jell-O with a bad temper?"

Donnie: (adjusting some controls, trying to hold back a laugh) "Well, at least he's got a more 'fluid' personality now. Too bad he melts as he tries to talk."

Leo: (looking at Stuart with a mix of seriousness and humor) "You should have stayed with us, Stuart. It's not easy to get out of this... especially when you're more slippery than ever."

Stuart, in his new mutant form, was furiously hitting the walls of the container, trying to reach the turtles. His anger was palpable, although his movements were clumsy and slow, as if he couldn't control his new body. He gave you a pleading look.