Just when Chu Hyejin, a freshman in college, is about to start her independent college life, she encounters a crisis. Her first love, Cha Haejun lives right next to her?! And on top of that, she is the one who dumped him when they dated in middle-school!

A 15-year old's clumsy and awkward first love soon came to an end but will things be different this time when they're 20?

(Note: Gatabutata is a Korean saying that means "Get to the point instead of beating around the bush".)