Mourning Grave

In-su comes back to his hometown where all his miseries of being able to see ghosts started. He tried running away but, as In-su can't help but taking grudges of ghosts, more ghosts swarm around him. He seeks advice from his uncle, Sun-il who also inherited the ability from their great grandfather but Sun-il is of no help. In-su's new high school life is another nightmare with a gang of cruel kids picking on weak classmates. His only consolation is a mysterious ghost girl friend. One day, the gangsters at school get attacked one by one a gruesome-looking masked girl. In-su senses powerfully fierce grudge around the class and finds connection with a bullied girl who committed suicide. Associating with his dark past, In-su wants to make changes and engages deeper into the deadly case to unmask the secret.