From their temporary base Gwen, Ianto and Clement listen in on the Government as 456 makes its demands of Frobisher. The 456 want a gift, they want the children. Clement remembers the first time the 456 came to Earth in 1965.
As a desolate Gwen records a video message explaining how the world ended, the Government urge parents to send their children back to school for innoculations against the 456. But are the innoculations really for protection?
The Government are preparing to bargain with the 456 and must decide which children will be sacrificed. As Lois watches on, recording every sinister word spoken, Captain Jack and his team sense a way into Thames House and an encounter with the 456.