There's a zombie outbreak after a medical trial in an international detention and medical facility on an isolated island. An ex US Special Forces/bodyguard woman inmate and a guard form a team.

When medical trials are pushed to their limits, the most extreme tests end up on St. Leonards Island in the north Atlantic - a re-purposed prison for some of the world's most violent criminals. But when one experiment goes wrong, the entire island becomes a terrifying, disease riddled maze for desperate survivors.—Golden Crab Films