 When the armor parts are discovered by Quinn's autistic son Rory, Rory is able to figure out how to translate the Predator language, just as MacKenna discovers the Predator has escaped and, finding where the armor pieces are, is now hunting his son.Joining forces with Doctor Casey Bracket- an evolutionary biologist brought in to study the Predator- and a group of soldiers suffering from various PTSD symptoms that he was being escorted with, MacKenna is able to rescue his son, only to discover the first Predator was being pursued when it's pursuer, a larger alien of its own kind, arrives.The subsequent fighting results in the death of the first Predator, most of the Stargazer staff and the other soldiers in MacKenna's makeshift unit, but MacKenna, Rory and Casey are able to kill the giant Predator.