Kang Seulgi, a college freshman who's been single since birth, confesses to her crush, the popular Wendy Son. Seulgi finds herself rejected by Wendy only because of her lack of dating experience. Refusing to give up, Seulgi seeks the campus' infamous serial dater, Irene Bae, to gain enough experience so that she may eventually date Wendy. Irene is bored with her usual routine, so she agrees to help the younger girl. 

Of course, as these types of arrangements usually go, things don't turn out like they quite expect.