A mysterious virus hits an isolated elementary school, transforming the kids into a feral swarm of mass savages. An unlikely hero must lead a motley band of teachers in the fight of their lives.
Elijah Wood
as Clint
Alison Pill
as Lucy
Rainn Wilson
as Wade
Jack McBrayer
as Tracy
Nasim Pedrad
as Rebekkah
Leigh Whannell
as Doug
Morgan Lily
as Tamra
Rebecca Marshall
as Emily Dopkins
Jorge Garcia
as Rick
Matt Jones
as Sheriff Dave
Kate Flannery
as Charman
Ian Brennan
as Vice Principal Simms
