In a tragic twist of fate, JungKook and JungHyun, twin brothers, are caught up in a tragedy. JungHyun, overwhelmed by unknown reasons, makes the fatal decision to commit suicide, leaving JungKook in pain and confusion. Consumed by anger and grief, JungKook turns his despair towards his brother's boyfriend, Jin, convinced that he is the cause of the immense loss. In his heart, a vengeance brews, a quest for justice for his brother that could lead him down a dark path from which there is no return until Jin pays for what he did to his brother.