It's a university festival day where everybody can have a fling. There are three boys in the robot club, self-claimed Smart Avengers of Engineering College. But the reality is that they have never dated with a girl for 9888 days. At this time, a straightforward girl, Hye Jin comes up to the timid boy, Hwi So. Now, it's time for the boys who learned Love through books and YouTube. Can they escape Single life in this fall?