Strange School Tales: Karma

Yoo-yi, who lost her parents at a young age, is now the teacher of Eung-bo High School, where her father worked at 20 years ago before his death. Hoping to find out a little more about her parents that she now remembers little of, Yoo-yi moves into where her family used to live in but starts to see paranormal phenomena. Do they have anything to do with her parents' deaths?