The mother-in-law and father-in-law became lovers, the same time as the marriage of Yeong-eun and Jeong-sik. The dizzying cohabitation of middle-aged lovers who stay hotter than a newlywed, and a newlywed couple who can't even burn hot as half of it begins.
친구의 집에서 함께 살며 남몰래 친구의 누나를 좋아하는 진우는 애인이 있으면서도 호시탐탐 누나에게 접근할 기회를 노리고 있다. 하지만 친구의 누나에게 섣불리 접근할 용기가 나지 않던 진우는 중요한 날 여자의 속옷을 입으면 행운이 온다는 말을 빌미로 누나에게 접근하고, 두 사람의 관계는 그렇게 점점 깊어지는데…
Dae-goo likes his sunbae Soo-kyeong, but she doesn't like him back. One day he discovers 3-Minute Partners and passionately has Soo-kyeong as his partner. As he changes, will he be able to succeed in winning Soo-kyeong's love?
