At 11:30am on Wednesday 29 July 1981, 20-year-old Lady Diana Spencer walked up the aisle of St Paul’s Cathedral towards HRH Prince Charles. lt was the fairytale wedding of the century, lifting the spirits of the nation during a turbulent time in the UK, and three quarters of a billion people watched around the world. But all wasn’ t as perfect as it seemed. The documentary uses rich archive and interviews with people who knew the couple to tell the revealing and often shocking inside story of the seven days running up to the wedding. It compares what the jubilant public saw from the outside to the doubt, fear and heartbreak suffered privately by two individuals propelled by a fate they couldn’t control.