An erotic film about relationships between married husband and his sisteri-in-law.

Scene 1. Once Hae-il’s wife leaves their house for work, Yeon-joo, his sister-in-law, eventually comes home drunk in broad daylight, drops all her things, and starts taking off her clothes one by one even before she reaches her bedroom, saying it was hot even though her brother-in-law was there. Hae-il’s picked up all her things, but when he secretly enters Yeon-joo’s room to return her stuff, he is shocked to see her fully naked. He could not control the temptation, so he began to touch his sister-in-law stretched out on the bed.

Scene 2. Tommy, a married husband who is dissatisfied with his sex life with his wife, has a hot thing with her sister-in-law, Sin-bi, who lives with them. After his wife leaves their house for work, he secretly sets up a cellphone in Sin-bi’s room, attempting to film her. However, when Sin-bi returns home, he quickly finds the camera and enters her brother-in-law’s room to question him. Tommy apologized and confessed to her sister-in-law, and Sin-bi felt sorry for him after hearing the whole story and relieved his brother-in-law’s desires.