Based on Interheart's H-game series, Keibiin features Ninomiya Kousuke(Satijo), a security guard at a all-around department store, who blackmails female shoppers who shoplift for sexual favors in return of not turning them in to the police. The 1st episodes features a lesbian shoplifting couple, 2nd features a sister of a shoplifter and a housewife, while the 3rd focus on a woman with a rapist/stalker after her and a internal department officer looking for evidence of crimes being comitted at the store.