For Jun Matsumoto, a school trip to the remote study camp of British Heights is hardly his idea of a good time. Akane Yamaguchi, the love of his life, hates him, and he’s rooming with Ogiwara, the school bully. Things get even worse when most of the students become violently sick, and Jun and a handful of survivors are left cut off from civilization as the snow closes in. Soon the power has gone off, and a strange, birdlike creature begins terrorizing the guests. As the students group together with the other remaining guests, suddenly their understanding of danger turns on its head. There are creatures out in the woods, and they’re hungry for human flesh…