When a mob hitman learns his boss is about to turn squealer, he takes it upon himself to use the zombified version of the man he was sent to kill to take out the boss, but soon discovers that taking even a single zombie into the Big Apple can lead to devastating consequences. And when the zombie apocalypse is inevitably unleashed, an epic adventure of survival unfolds, as a small band of the still living make a desperate bid to escape this now city of the dead.