The protagonists in the play are win and korn, who were originally ordinary friends. The win family has a farm, which is the son of a farmer. korn often visits his sick father. Because of this, after win's father died, he left an extra legacy to korn.

This made win extremely angry and suspected that korn had some inexplicable relationship with his biological father, so win began to blame korn, but korn and win's sister still kept in touch.

Once win accidentally bumped into his sister on the phone with korn, and left with her in a rage, resulting in an accident on the way.

When they woke up, win and her sister exchanged bodies.