My sister-in-law's raunchy hobby A lonely goose father (a man who sends money to his family abroad) takes special interest in his sister-in-law's hobby My sister-in-law's secret part-time job Seon-mi lives with her sister and works a secret part-time job in order to pay rent. One day her brother-in-law comes in as her guest... My sister-in-law's hidden past Gwang-wook is shocked to see his sister-in-law during his fifth year of marriage. She hasn't changed since he loved her five years ago.

Multiple short story scenes are combined into a movie, telling the story of an unrequited relationship between a brother-in-law and an aunt. Men from different families cannot withstand the temptation of an aunt and eventually end up having sex with her Part One: My brother-in-law, who works with Auntie Ailian in a company, will be on a two day and one night business trip with her. After his brother-in-law divorced his wife a year ago, his relationship with his sister-in-law naturally became estranged. Part 2: The wife who was obsessed with her brother-in-law passed away first and now lives with her sister-in-law. Now, without a wife, my brother-in-law has a concern... she is always naked at home!