落ちぶれた格闘家・大木が偶然に手に入れた「洗脳ドリル」。そこで日頃から悪態をついているラウンドガールの美結とひまりをドリルで操ると…唯一の味方だと思っていたゆみの裏切りを知る。試合当日、ドリルの力で逆転勝利を狙う大木だが、ゆみが思い描いていた秘策も明らかになり…。3人の運命と大木の結末は？

A “brainwashing drill” that Oki, a fallen martial artist, accidentally obtained. There, when he manipulates the round girls Miyu and Himari, who he regularly curses at, he learns of the betrayal of Yumi, who he thought was his only ally. On the day of the match, Oki aims for a come-from-behind victory using the power of drills, but the secret plan Yumi had in mind is also revealed… What will be the fate of the three and Oki’s outcome?