Its been three months since Sunggyu’s girlfriend, Min Jin, died. Hes been depressed from the day she died until now. Woohyuns’s cousin,  Mi Jae, moves in with them in their dorm because her parents died in the same car accident that killed Min Jin. Sunggyu later realizes that Mi Jae’s habits are very similar to Min Jin. Their initials are even the same.

 At first, Sunggyu doesn’t like her because she always tries to make him smile. They got a love hate relationship after Sunggyu confronted her that shes annoying, but eventually they fell for each other. Mi Jae has a big secret that no one knows about. What will happen to them? Will they be together? or Will they hate each other?