Shamoto runs a small tropical fish shop. When his daughter Mitsuko is caught shoplifting at a grocery store a man named Murata steps in to settle things between the girl and the store manager. Murata also runs a tropical fish shop and he and Shamoto soon become friendly. However Murata hides many dark secrets behind his friendly face.
In future Tokyo, a young woman in the privatized police force tracks down her father's killer while battling against mutant rebels known as engineers.
The life of a young, Japanese schoolgirl is destroyed when her family is killed by a Ninja-Yakuza family. Her hand cut off, she replaces it with various machines-of-death, and seeks revenge.
