Craig McCracken Libri

The imaginary friends at Foster's home and the superheroes the Powerpuff Girls have a series of adventures, including going to a fair, cleaning the house, and thwarting cereal bandits.

After learning from a group of angry girls that there is a new club in the park that allows boys only, Buttercup, Blossom, and Bubbles go to investigate, never guessing that it could be a trap.