Hana is a housewife in her fifth year of marriage. One evening, on the way home from a company drinking party, her husband brings home a male colleague named Takahashi. Takahashi is cheerful and a good talker, and Hana enjoys the evening with him. A few days later, during the day when her husband is not around, Takahashi comes to visit her alone. When she asks him, he says he's here on an errand for some company paperwork... Hana welcomes him without any suspicion, but in truth, this man, Takahashi, is a single man with a penchant for the sex industry and an unrivaled lover of big breasts...