The Powerpuff Girls decided to make a pie filled with Chemical X. As they left it by the window to cool, Mojo Jojo stole it and shared it with the other villains. The girls didn't see the pie once they returned to the kitchen. Bubbles told Blossom and Buttercup she added Chemical X to the pie so that it would be super. They figured out that Mojo Jojo has taken the pie. After defeating the villains and Mojo Jojo, HIM offered a challenge to his lair.