Episode 1

At the outbreak of war, two teenage boys - one German and one British - defy their parents to sign up. But their enthusiasm is tested when they get their first taste of battle.

Episode 2

1915. On the eastern front, Michael is forced to make a terrible choice, while on the western front Tommy's regiment experiments with a dangerous new weapon.

Episode 3

1916. Tommy and Michael's regiments face one another on opposite sides of the Somme battlefield.

Episode 4

1917. Michael is taken prisoner, and Joanna has some big news for Tommy.

Episode 5

1918. As peace terms are negotiated, Tommy and Michael are still on the front line.