What begins as a search for a missing teenager changes ex-cop Richard McCallum's life forever when he uncovers clues pointing to an extraterrestrial plot to infiltrate humanity as part of a covert invasion of the Earth. McCallum had never believed all those tabloid headlines about UFOs and alien abductions, but now he has no choice but to join the fight against the enigmatic Klar--before he himself becomes the next person to disappear.