A group of young friends are trapped inside a house during the beginning of the zombie apocalypse. Fearing that one of their own will turn on them, they must find a way to survive and save their friend's life in the process, all while learning the spine-tingling secret one of them carries.

The end of days is near. Mother earth has had enough of these pesky humans and plans to bring on the apocalypse using a mysterious sound to carry out her wrath.