Warrant Officer John Benton, a long-serving member of the United Nations Intelligence Taksforce (UNIT), is distracted from his mission to deliver valuable radioactive material to UNIT HQ by ghostly visions of his father, who was killed during World War 2, and his brother Chris, who died as a result of a childhood game that went wrong. Can Benton face these demons of his past and recover to prevent the theft of the radioactive material?