Sin-wook and Dong-soo have been friends since they were kids. Sin-wook and his wife swap partners with Dong-soo and his wife. They start playing Strip Go Stop and the game gets serious. The four of them have sex, but they end up falling for each others' wives and husbands and even meet in secret. One day, when their sex life reaches its peak, Sin-wook's wife, Yeon-hee, gets pregnant, not knowing whose baby it is. Her relationship with Sin-wook is on thin ice and then the baby is born. They do a DNA test to find out who the father is.
There's a beauty who can't see. Her boyfriend broadcasts her private life in secret under the ID 'Blind Beauty Boyfriend'. The boyfriend holds an event to see Blind Beauty in person. Viewer 'Smoking After Sex' gets picked. Seeing her up close and personal makes him feel even hornier. In the end, he can't control himself. He tackles 'Blind Beauty Boyfriend' and stands in front of Blind Beauty. Just as he's about to touch her, she opens her eyes and asks, "Is that how you like it?" 'Smoking After Sex' collapses to the floor as Blind Beauty glares at the camera and says, "You're all the same pieces of shit."
