It is story about a couple must protect their 2-year-old daughter's life from a monster called Bogiwan.Hideki got married with his ideal woman Kana. One day, a mysterious visitor came to talk to his colleague that he wanted to talk about “Chisa.” Chisa was the name that his pregnant wife had chosen for their unborn daughter. How could the visitor know their daughter’s name? The colleague who talked to “the visitor” became strangely sick and the identity of the visitor remained a mystery. Two years later, there were phone calls from an unknown woman who kept repeating Chisa’s name. Hideki was afraid that someone will harm Chisa. He met a freelance writer Nozaki and his psychic girlfriend Makoto to help him. Makoto sensed “it” who was the visitor so Hideki decided to fight for his family but he walked into its trap and was brutally killed. Then Makoto’s old sister, Kotoko who was a medium and the country’s top exorcist, came to fight together with them. They all gathered in Hideki’s apartment. “IT is coming!” Kotoko said. The battle began.