In a tented field hospital on the coast of France, a team of doctors, nurses, and volunteers work together to heal the bodies and souls of men wounded in the trenches of WWI. The hospital is a frontier: between the battlefield and home front but also between the old rules, hierarchies, class distinctions, and a new way of thinking. Kitty (Oona Chaplin, Game of Thrones), Rosalie, and Flora arrive as the hospital's first volunteer nurses and struggle to be accepted by the established medical team. The girls are flung headlong into a world for which nothing and nobody could have prepared them, but this is also an opportunity to break free of the constraints and limitations of their lives back home. Executive Produced by Emmy Award-winning Anne Pivcevic (Great Expectations, South Riding), written by Sarah Phelps (Great Expectations, Oliver Twist), and featuring Hermione Norris (MI-5) and Kevin Doyle (Downton Abbey), The Crimson Field tells the story of World War One's front line medics - their hopes, fears, triumphs, and tragedies.