Flower. Flatty. And everything sparky. These were the ingredients chosen to create the perfect little aircraft carriers.

But Professor Akashi accidentally added an extra ingredient to the concoction... Chemical X.

Thus the Powerpuff (Ship) Girls were born. Using their ultra-superpowers, Unryuu, Amagi, and Katsuragi have dedicated their lives to fighting the sky and the forces of Abyssal Fleet.