One Day, My Husband’s Woman Walked Through the Front Door

Ji-seon, who is a sex addict, secretly invites another man to her house for sex without her husband’s knowledge, but after he finds out, she takes drastic measures. One day, her husband’s other woman enters through the front door, and an absurd cohabitation begins. The woman’s true identity turns out to be the wife of Ji-seon’s lover. Ji-seon finds herself unable to stand up to her husband’s new lover, only being overwhelmed by her.