Mi Na is a normal high school student who skatesboards to school every day and has an unacknowledged crush on family friend slash local tennis star Jong Min, who is her fellow student. Also Mi Na has the superpower to turn invisible twice a day.

Nothing seems to work out for Cha Jicheon. One day, he goes to a convenient store in a drunken state, and purchases a ‘buy one get one free’ deal. The next morning, there’s a naked man in his room who looks just like him. Jicheon leaves his alter ego at home, and takes his girlfriend on their first holiday together. Now, Jicheon’s family spends a night with his alter ego… “I wish there were another me.”

One day, during a university festival where people are often known to find a partner, the 3 incredibly single members of the robot club decide to attend. There the sloppy and timid Hwi-so meets a very aggressive girl by the name of Hye-jin. His romantic advances, which he learned through reading books and watching YouTube, finally wake up to make their move. But will two finally become one this fall?