A mysterious creature destroys 70% of the moon. The creature then warns that if he is not destroyed by March of next year, Earth will be next. The creature also demands that he becomes the homeroom teacher for 3rd grade E class at Kunugigaoka Junior High School. The government is powerless to say...
Hana Ichii attends a school that she admired since she was a child. One day, she wakes up and finds herself locked in a cage with her classmates. They are forced to take part in a survival game using their cellphones.
A smartphone is found at the TV shoot for a show about the Sea of Trees near Mount Fuji. The phone contains videos of three high school girls who met online: Ami (Okuma Ami), who is suicidal, Hinata (Kohinata Setsu), who yearns to witness the instant someone dies, and Mitan (Otonari Mirei).