In 2017, Son Oh Gong and Ma Wang are in conflict with each other and they look for a true light in a dark world where evils exists everywhere.

Bothered to realize they are next-door neighbors and share a psychiatrist, a man and a woman find it’s impossible to stay out of each other’s way.

Strange rumors start to spread at the catholic girls’ high school after Unjoo committed suicide one night. Unjoo’s younger sister Jung-un who attends the same school gets suspicious about Unjoo’s…