Sontaran Field Major Styre is conducting experiments on the survivors of future Earth in preparation of a full-scale Sontaran invasion of the planet. Can the Doctor defeat Styre and save the world?

An alien intelligence hitches a ride onboard the TARDIS to 15th century Italy, where a deranged astrologer attempts to harness its power.

In the Second World War, spring 1944: shortly before the planned Ardennes offensive, Germans and Americans stand waiting on the German-Belgian border. The small Eifel village of Winterspelt threatens to become the scene of a bloody battle. A German officer comes up with a plan to hand over his battalion to the Americans without a fight. He finds support from three inhabitants of the small village, who help him to present his offer of surrender to the Americans, which they ultimately reject.