Satomi wakes up late one morning and starts running to school, but she crashes onto Keshi. They both stare at each other for a moment and noticed they switched bodies! Now Keshi is in Satomi's body and Satomi is in Keshi's body. They have to continue the other's life until they fix their problem. But things get complicated when Mariko, Satomi's best friend, confesses that she likes Naoshige to Keshi, in Satomi's body, and he doesn't know what to do.