He forced me to kiss him and here I am, a gangster's mistress!! He makes love to me, his practiced hands stroking all my sensitive spots... I can never tell anyone about our relationship...!" During a stakeout, police officer Yui meets a man with a dangerous air about him. After he suddenly kisses her with melting hot passion, she finds herself being whisked away... to his mafia headquarters! The man turns out to be the young head of a yakuza mafia family under investigation. He becomes more and more interested in Yui as she clams up during his amorous bedroom interrogations, declaring, "I'll make you my mistress," as their dangerous cohabitation gets underway!