Having abandoned modern civilization, Ryoichi lives an isolated, self-sufficient life on a snow-covered mountain and sends mail bombs to the CEOs of corporations and TV networks. One day, he encounters a mysterious creature in the forest. That night, his older brother, who had committed suicide, appears before him at his cabin. The apparition takes Ryoichi beyond a door, where Ryoichi learns the truth about his family.
Toma lives in a small riverside town with his brutish father and his father's girlfriend. Witnessing his father's predilections for abuse, Toma becomes anxious that he will have inherited those urges.
Gisuke is a retired college professor. His wife has passed away, and he is now living alone in an old Japanese-style house. One day, an unsettling message appears on his computer saying that the enemy is coming.
Kinuko was married to her husband for many years, but her husband passed away. Since then, Kinuko has lived in the same home with her granddaughter Nagisa.
Taeko’s friend Maya confesses that she has a crush on Taeko's father. Taeko tells her father and mother. Taeko's mother laughs and Taeko's father acts like its not a big deal. Since then, Maya rushes to Taeko's father.
