PREMIUM x Madonna's first collaboration!! Mito and Yamagishi, who live in the same apartment, meet once a month to complain about their spouses and get drunk. A few days later, Aika has an argument with her husband over something trivial, and when she returns to her parents' house, Kana stops Aika, who runs out. She then goes to the Yamagishi house to try to persuade him, but finds that Aika's husband has a high fever. Unable to bear the situation, Kana proposes that they swap couples for a few days. At the time, she has no idea that a shocking outcome awaits her...