A member of BTS, Jungkook, has been secretly in a relationship for over a year with a girl kept entirely out of the public eye due to strict agency rules from HYBE Corporation. When he finally confides in the group, they decide to support him and plan a surprise reunion with her for his upcoming birthday, hoping to give him a rare moment of happiness despite the pressures of fame. However, during her stay in Seoul, a late-night ride with Kim Taehyung leads to paparazzi photos being taken. The images quickly go viral and instead of causing backlash, they unexpectedly increase public interest. The agency chooses to remain silent and subtly allow the rumor to grow for publicity reasons. As the media begins to link her more and more with Taehyung instead of Jungkook, a false narrative forms, creating tension within the group and emotional strain for everyone involved. Jungkook struggles with seeing the relationship he kept hidden now being misrepresented, while the situation begins to blur boundaries and complicate feelings between all three.