In 1965 Scotland, a mysterious alien race known only as “the 456” abducted a group of orphans. Now the 456 are coming back, and are broadcasting portents of their return through every child on the face of the Earth -- including Jack's grandson and Ianto's niece and nephew. When Gwen learns of a psychiatric patient who has also picked up the 456 transmissions, she soon uncovers his connection to the disappearances in 1965. But forces within the British government, coordinated by Home Office civil servant John Frobisher, are conspiring against Torchwood... and what's left of the team is soon on the run.