At the height of the First World War, two young British soldiers must cross enemy territory and deliver a message that will stop a deadly attack on hundreds of soldiers.

It is 1918 and the end of WWI. Millions have died, and the world is exhausted by war. But soon a new horror is sweeping the world, a terrifying virus that will kill more than fifty million people - the Spanish flu. Using dramatic reconstruction and eyewitness testimony from doctors, soldiers, civilians and politicians, this one-off special brings to life the onslaught of the disease, the horrors of those who lived through it and the efforts of the pioneering scientists desperately looking for the cure. Narrated by Christopher Eccleston, the film also asks whether, a century later, the lessons learnt in 1918 might help us fight a future global flu pandemic.

In World War II London, nine-year-old George is evacuated to the countryside by his mother, Rita, to escape the bombings. Defiant and determined to return to his family, George embarks on an epic, perilous journey back home as Rita searches for him.

Set on the eve of the First World War, the film follows a young boy who discovers a Queen of Spain fritillary, one of the rarest butterflies ever seen in the British Isles. His encounter reflects early 20th-century attitudes toward butterfly collecting. The story draws on the natural history of a species rarely recorded in Britain.