Taking place in a futuristic city called Kamina City, Rune Ballot is a young prostitute who was taken in by the notorious player Shell Septinous. One night, Shell abandons Rune and tries to kill her in an explosion. However, Dr. Easter rescues her from her and transforms her into a cyborg. An artificial intelligence in the form of a mouse accompanies her to adapt to her new life. Rune is trained to use the advanced technology installed in her to fend off Shell's attempts to kill her to prevent her from testifying against him.