Tatsuhiro Tachibana (a freelancer for the yakuza) is perennially in search of the big score, but usually gets scorn and derision instead (especially from women). However, his luck finally changes after receiving a visit from Alexandra, his niece from overseas, when he suddenly gains the power to control and brainwash minds to his pleasure.

Lacking scruples, Tatsuhiro immediately starts playing with the minds of other people (especially women), but is totally unaware that the dear Alexandra (the hidden source of his power) is not really his niece, or even human...