Gwang-sik is a single father with a son and Hae-ra is a widow with a daughter. They get remarried and become one family. Gwang-sik's son Myeong-ho and Hae-ra's daughter Dal-rae are brother and sister but they end up having sex. Their parents notice something is wrong but they pretend they don't know anything. That's because Gwang-sik feels attracted to Dal-rae and Hae-ra feels attracted to Myeong-ho. They go on a family trip to Kangwondo. They end up colliding with their sexual desires for each other and in the end, their family is reconstructed.

Daebok is a crisis small business owner with overdue alimony and utility bills. During the recession, only credit loans increase. Still, there is no income, and the unemployed son Hongmin is no help. One day, Wonchang, overdue for credit, threatens Daebok.