Mind Your Own Business~ I just want to love again! Dong-seok (Kang Kyung-joon), who is in a relationship with a beautiful music college student, Ji-yeon (Lee El), ends up going abroad to study according to his parents' wishes. However, Ji-yeon doesn't show up at the place where he was going to propose to her the night before, and the two of them break up due to a misunderstanding… "I'm not moving! I can't!" Meanwhile, there are horrible rumors that there are ghosts living in Ji-yeon's building, and the police and a shaman come by. Who is the ghost...?