Rosè is an assassin. It's her job to kill and fight. Her dad gave her a mission to kill Jeon Jungkook. She had to go to school to get closer with him. The more she got close to him, the more it got harder to kill him. Will she really kill him? Jungkook is a son of one of the rich CEO's. He is dangerous, but inside he's a video game addict. Suddenly this girl came to his life. He started trusting her, but in the end he wish he didn't.