Mizuki works as the No.1 Bunny Girl at a nightclub. One day, due to an incident, the club's owner changes. Simultaneously, a woman named Ryoka, who seems to be acquainted with the new owner, appears and declares, 'I will manage this club as the No.1.' The arrogant Ryoka and the defiant Mizuki. This leads to a sales competition between the two. The loser must swear absolute obedience to the winner... The sales competition, involving the club's fellow Bunny Girls and customers, ends in a landslide victory for Ryoka. True to their promise, she orders Mizuki to become her slave
