Lily and Natsu, close mom friends who are growing dissatisfied with their husbands. The home drinking party that started at Lily's house, as they got drunk, it developed into a husband-bashing session. The two of them jokingly say, "Your husband is enviable." Gradually, they begin to talk about their dissatisfaction with their nighttime sex lives... Lily's husband appears there. After that, the three of them start drinking again. Natsu, who has a past where she hasn't had much sex, boldly confesses, "Actually, I tried swapping the other day!" Lily, who is surprised but can't hide her interest. Accepting the proposal in a drunken state, Natsu immediately calls her husband... The sense of transgression of embracing each other's spouses, a thrilling night where jealousy and pleasure are mixed. The desires of the four people, whose reason has broken down, are eventually swallowed up in a swirling orgy that cannot be stopped.
