Working as a sushi chef, Hanoka Jitta (nicknamed Hana-chan) is always cheerful and bright, making her extremely popular among the housewives in the housing complex. One day, when she goes to collect payment at Azumi's place, she is seduced by Azumi with soft, alluring poses. At that moment, Hana-chan, still wrapped in a bath towel, is struck by a nosebleed upon seeing Leo. Leo kindly tends to her, but soon after, strange incidents begin to occur with the sushi she delivers. When she goes to pick up the sushi tubs, she's shocked to discover Chihiro caught in an affair with Yasu, the liquor store guy! One after another, a series of erotic and bizarre events unfold around Hana-chan.