Jiyeong is an orphan who is searching for her lost older brother. She decides to disguise herself as a boy and attend Taejong Boys High School in order to find him. When Jiyeong's best friend Jungkook persuades her to live at the House of Secrets, little does she know that her brother is closer than she would've thought. Also, she would've never expected to make such an impact on the lives of the boys there.

Taehyung Kim is a famous singer, known to be arrogant and confident. Eunkyung Jang is a normal university student who falls in love with the optimistic and thoughtful V, who is actually Taehyung in disguise. What will happen when she realizes that the person she loves is actually the annoying and rude singer she dislikes?