Mary Hussain (Joanna Scanlan), who converted to Islam when she married and is now in her early 60s, lives quietly with her husband Ahmed. Following his unexpected death, she suddenly finds herself a widow. A day after the burial, she discovers that Ahmed had a secret life just 21 miles away from their Dover home, across the Channel in Calais. The shocking discovery compels her to go there to find out more, and as she grapples with her shattered sense of identity, her search for understanding has surprising consequences. Joanna Scanlan won a BAFTA Award for her performance, and the film received three further BAFTA nominations.