Jack Cooper and BT-7274, in their search for Major Anderson, take a shortcut through the World Foundry, a subterranean manufacturing plant. Things quickly go wrong when BT is captured and dragged deeper into the complex, forcing Cooper to chase after him. Cooper must now survive the traps and trials laid out for him by Ash, the cold and calculating simulacrum Apex Predator in charge of the facility, and recover BT before their inevitable showdown.