Between eating sweets and trying to win over her crush, Momoko Akadzutsumi is a typical thirteen-year-old girl... However, she holds a big secret: along with her friends Miyako Goutokuji and Kaoru Matsubara, she is one of the Powerpuff Girls Z! Their mission? To fight the evil monsters created from the mysterious Chemical Z. But when two new villains come into the picture, the Powerpuff Z may just face their toughest challenge yet!