There's something off about Ryon. Everyone at school thinks he has a crush on his stepsister and his father, Joseph, finds his behavior too intimate. Ryon tries to protect Mia, who is bullied daily, but is powerless at home where his father abuses them. Unfortunately, they rely on Joseph for their lifestyle. Ryon's stepmother attempts to leave in the night and being the possessive man he is, Joseph is right on her tail. The two of them abandon their children. As Ryon runs out of money and begins losing his mind a strange man with red hair appears on his street one day. The man claims to be a demon. He offers Ryon a job as his assistant. Using this as an opportunity to take revenge on all the people who hurt his stepsister, Ryon starts spiraling. But he will do anything for Mia.