PREMIUM x Madonna's first collaboration! ! Mito and Yamagishi, who live in the same apartment, complain about each other's spouses and drink alcohol once a month. A few days later, Aika quarreled with her husband over trivial matters, and when she returned to her parents' house, I wonder if Aika would stop her from leaving her house. And when she went to the Yamagishi house to persuade her, Aika's husband was suffering from a high fever. Kana, who could not see the situation, proposes an exchange couple to her husband for a few days. At that time, she didn't know that a terrible ending was waiting for her...