Haotai and Dongxi grew up together like brothers. Haotai, who moved to Seoul a few years ago, returned to Gangneung after his father's funeral. On the other hand, Dongxi was kicked out of the house for coming out, and lived alone in Haotai's empty house. The two who met again after a long time began to live under the same roof. When Dongxi saw Haotai, who was like a brother and his first love again, he tried to control his excitement, but it was not easy. Haotai also developed feelings for Dongxi, whom he had not seen for a long time, that he had never had before. In order to escape from his chaotic feelings for Dongxi, Haotai began to date girlfriends casually. Dongxi felt hurt watching Haotai like this, and the precarious relationship between the two began to slowly change because of an unexpected incident... This is a spin-off movie of "Unintentional Love Story"