It's been almost three decades since the rage virus escaped a biological weapons laboratory, and now, still in a ruthlessly enforced quarantine, some have found ways to exist amidst the infected. One such group of survivors lives on an island connected to the mainland by a single, heavily defended causeway. When one of the group leaves the island on a mission into the dark heart of the mainland, he discovers secrets, wonders and horrors that have mutated not only the infected but other survivors as well.

The cast includes Jodie Comer, Aaron Taylor-Johnson, Jack O'Connell, Alfie Williams and Ralph Fiennes.