The Doctor, meanwhile, has been rescued by a giant crab called Scrounger, who was designed to fight in a war but is now surviving with others of his kind on a nearby island. Shortly after being taken there, the Doctor meets the only other humanoid around, Ranger, who is suffering from shell shock as a result of the war. He also shares a mental link through something called "The Memory", which used to issue orders during the war but has now fallen silent. As the Doctor struggles to communicate and come up with a plan to save himself, Ranger is attacked by an enemy crab, bigger than the others. He survives, and nicknames his attacker "Meathook".