Her career is going well, but romance always ends in betrayal. After a boyfriend calls her a dead fish in bed, she loses all sexual confidence. One night she goes drinking with her junior coworker Hayashi and unexpectedly takes an aphrodisiac. Confused but burning with desire, she soon finds herself in a hotel with him, desperately craving each other's bodies. It is pleasure unlike anything she has ever known, and from that day on, something inside her changes forever.