The wild imaginations of two married wives become reality! Tonight, they will covet each other's husbands. One day, Hye-ri confides her concerns to her friend Joo-hee. Hye-ri doesn't know what to do since she hasn't had sex with her husband, Seok-min, for several months. Joo-hee suggests that they swap couples, saying that she also needs new stimulation.

Yoo-jin and Myeong-seok get a call from Hye-jin in the middle of the night. She finally escapes from domestic violence and comes to live with her sister. However, Myeong-seok is nice to her and Hye-jin starts to feel fond of him...

Joon-pyo is a troublemaker who just got out of prison, and moves in with his brother Joon-seok and his wife Eun-ha. On the first day of meeting his sister-in-law, she looks calm and quiet, but she actually used to be a member of a high school gang. She hands Joon-pyo some money in return for not talking about her past. A few days later, Eun-ha is furious to see her husband having an intimate moment with her sister. Joon-pyo sees this as his chance and approaches a drunken Eun-ha...