Mina and Sohee are close friends like sisters. Sohee boasts about the gifts she received from her boyfriend, Seungmo. Mina dislikes Sohee and complains to her boyfriend, Hyungoo. One day, Mina sees Seungmo, pretends to be sick, and enters Seungmo's house with him. Sohee, who returns home, finds the two people together...