In a big house that suddenly opened, a boarding student is looking for someone to share money and loneliness with. A boarding student happened to come to Ga-yeong's house through a friend's introduction. However, the boarding school student, who naturally thought she was a woman, was an adult male, and Ga-yeong continues to be wary of Hyeon-min. However, as soon as she finds out that Hyeon-min is a good person, Ga-yeong seduces him. Meanwhile, Hyeon-min's friend Jeong-woo happens to visit Ga-yeong's house... and the sweet and bloody story unfolds between two friends with a woman between them.

Dongwon-Minho brothers living in one house. My brother Dong-won is watching a video at home without a girlfriend. She introduces a woman because her younger sister is sorry. That night, Dongwon's girlfriend support and introduce to her brother. Invites Jisu to the house and gathers for a drink. The night is getting deeper and drinking is. Suddenly Jisu kisses Minho, Let's seduce them and make love that day. The next day, Index and Ji-won come back to play. My older brother, Gim, who became a younger brother's lover. Sneaking into her sleeping room...