Stumbling across an uncompleted 1939 film called "Princess Marushka", filmmaker Sam becomes intrigued with the young actor Sylvain Marceau, who last appeared in the film. Hoping to discover the mystery behind Sylvain's disappearance, Sam decides to make a documentary and sets off to interview those who knew Sylvain, including elderly Lisa Morain. Through her interview, Sam learns the story of Lisa and Sylvain's doomed love affair on the eve of World War II.

Two young lovers, Anna and Martti, are split apart but are reunited many years later when their lives have changed considerably. Anna is a war widow; Martti a writer, is married, and has five children.

Compiled from the Imperial War Museum Official Collection, this film collects rare and previously unseen film material shot by official cameramen on behalf of the RAF before the formation of the RAF Film Production Unit in September 1941. It tells the story of the RAF in the early years of the Second World War through the "phoney war", the Blitzkfreig and the Battle of Britain, capturing everyday life for those who served as wel as the RAF's frontline aircraft of the period. Other highlights include a fillmed account of a Blenheim raid on Northern France, a Sunderland flying boat sortie over Norway and Winston Churchill inspecting the new American aircraft for the RADF including the B-17, Douglas Boston and P-40.