Bill Good's return to Earth in 2015 was greeted by an explosion that knocks him senseless. Now in an army hospital, he discovers the year is actually1941. Nurse Kaye Meadows helps him escape as MI5 wants to lock him in The Tower. Nazi spies working in England now pursue them because Bill knows their future and must kill him to stop it. The Andreanans also hunt Bill to stop him impregnating Anya, which will prevent Earth's future line!