The game is set in a world where people have been taken over by a virus, altering their behavior. Two siblings, a male named Blow and a hermaphrodite Falla are immune to the virus and set off to fight it. The characters exchange dialog during gameplay to progress the story. The bosses at the end of each stage are mecha piloted by scantily clad women including catgirls. After each boss is defeated, Blow and Falla interact with the women. Blow ejaculates into the boss character to cure them from the virus.