During the Blitz of World War II, a female screenwriter works on a film celebrating England's resilience as a way to buoy a weary populace's spirits. Her efforts to dramatise the true story of two sisters who undertook their own maritime mission to rescue wounded soldiers are met with mixed feelings by a dismissive all-male staff.

• BBC Film
• HanWay Films
• Gemma Arterton
• Sam Claflin
• Bill Nighy
• Jack Huston
• Helen McCrory
• Eddie Marsan
• Jake Lacy
• Rachael Stirling