Ethan Winter, an analytical detective, partners with driven DI Lauren Bell. His deductive genius aids her murder squad, but he's haunted by an unsolved murder of someone close to him.

With nowhere else to hide, a group of mercenaries and their prisoners take cover inside a long abandoned Bulldog tank. But, while they try to keep the forces outside at bay, the real enemy is already among them, locked inside the 'Belly of the Bulldog'. After collaborating closely with Ben Wheatley on FREE FIRE, HIGH-RISE, A FIELD IN ENGLAND and KILL LIST, director Nick Gillespie makes his feature debut.

故事根据乔治·马丁的短片小说改编，讲述一位想要获得变换身形能力 的皇后做出大胆尝试，雇佣了一个拥有强大力量，并且令人恐惧的女人格雷·阿里斯。阿里斯和她的向导流浪汉博伊斯被送到了失落之地，在这里他们需要用智慧战胜人类和恶魔，并且他们需要探究善与恶、罪过与成就、爱与失去的本质。