Frustrated by her busy boyfriend not being able to satisfy her desires, OL Natsumi reluctantly agrees to go on a drinking date with her considerate boss. After getting drunk at a bar, they end up having an affair at a hotel where she experiences an unexpected accident - a condom breaks during their sexual encounter, resulting in unprotected anal intercourse. However, what seemed like a simple mishap turns out to be part of a calculated trap set up by her boss; he had orchestrated the entire situation as an excuse to force her into unwanted bareback sex...

仕事が忙しくて抱いてくれない彼氏への不満から、気にかけてくれた上司の誘いで飲みに行ったOLのなつ。泥●し、介抱の為に入ったホテルで浮気セックスをするも、コンドームが破けて中出しされてしまうまさかのハプニングが。しかしこれは上司が細工して起こった仕組まれた事故で、生ハメへの口実に繋げる計画的な罠だった…。