1917: The Great War is at its fiercest and most terrible. But things are about to get even worse. Armaments manufacturer Lord Hellcombe has a new secret weapon he believes will win the war. But when the Doctor witnesses the final demonstration he begins to realize how much danger everyone is in: Lord Hellcombe claims to have invented the Dalek! Except, of course, that nothing is quite what it seems. Now, the Doctor and his new friends must draw on every type of early 20th century technology and every element of human ingenuity and bravery if they are to discover the truth - and survive - to prevent the entire Western Front of World War One from becoming part of The Dalek Project!