The Torchwood team are placed in mortal danger when they investigate a mysterious signal that is reaching out hypnotically to lure in vast groups of helpless children

The team reels from recent events as Gwen is branded a terrorist suspect. The chilling prescience of the alien signal continues to reach forward and menace it's young victims.

The Torchwood team are forced to set up a new temporary base and are forced to break the law to get the things they need. Gwen turns to Lois for more help in the quest to discover what is going on. Jack's daughter and grandson's lives are endangered when they are taken captive by the hit squad.

Jack explains to the rest of the team what happened in 1965 and why he had to hand the children over. It is revealed that Clement was one of the children that was going to be handed over. Frobisher tries to find out what will happen to the children if they are handed over to the 456.

The government goes ahead with their plan to give 10% of the world's children to the 456. The 456 reveal why they want the children. Jack and Gwen realise that there is nothing they can do to stop what is happening. Jack is held in custody as Gwen is allowed to return to Wales to tell Ianto's family that he is dead.