With the help of Diana's (Claire Foy's) twin brothers (Tom Hollander) and the ground-breaking ideas of inventor Teddy Hall (Hugh Bonneville), Robin and Diana dare to escape the hospital ward to seek out a full and passionate life together, raising their young son, travelling and devoting their lives to helping other polio patients.

Hugh Bonneville writes: “An inspiring story based on the life of producer Jonathan Cavendish’s father, Robin, who contracted polio and was destined for a short, institutionalised life on a respirator. However, Robin and his wife’s remarkable grit allowed him to live a full and spirited life for many, many years. In one scene, family friends carry Robin and his bed from the house out into the garden. I suppose if they’d really put their minds to it the props department could have found a heavier cast-iron bed, but they would have been hard pushed. It weighed an absolute ton.”