Ordinary housewife Ji-soo's (Lee Sun-joo) dream is to be loved by her husband. Her husband Tae-joo (Park Jeong-hwan) is a rough debt collector who is unhappy about his sex life with his wife. Gangster Chang-soo (Jang Yong-seok) who makes videos from motels using a hidden camera under Detective Kang (Yeo Hyeon-soo) who commits corruption, borrows money from Tae-joo to gamble with but can't pay him back in time. Ji-soo finds out she's pregnant and is glad she can finally earn some love from her husband but she discovers a video of her husband cheating in the car blackbox. She calms down and comes home early one day to find her husband cheating on her. However, the woman who is sleeping with her husband turns out to be her own mother (Lee Eun-mi-I). Ji-soo plans to take revenge and there is a man who is watching her in secret...

Four women who are having secret affairs tell their cheeky stories. Four women who haven't had much bonding since they got married, get together. They have nothing to hide from each other. They all enjoy a spa day and talk about things that they have never been able to talk about. They are all having secret affairs with their child's tutor, the screen golf trainer, the man next door and a boy twelve years younger!

Eun-ji and Seung-ho, Seong-sik and Joo-ran move into a neighborhood at similar times. Eun-ji is lonely because of her husband's frequent late-nights and Seong-sik takes care of the house while his wife works. One day, Seong-sik goes over to Eun-ji's house to return a package but end up drinking wine with her. Seong-sik drunkenly kisses Eun-ji and the two spend a night in each others' arms. They continue to meet secretly like that and one day lie to their husband and wife and leave on a trip together. However, Seong-sik returns home because his pipes have burst and Eun-ji witnesses her husband and the woman next door, Joo-ran in bed together. A few months later, Seong-sik, Eun-ji, Seung-ho and Joo-ran run into each other but with different partners... Are you living with the one you love?