The actor explores his paternal grandparents service in the British secret services and how they met and married in the Caribbean. He also looks at the stories of his maternal grandparents who fell in love during the Blitz.
Helena Bonham Carter goes in search of the truth behind her relatives' involvement in World War II. Both sets of her grandparents, one pair in France the other in England, were unconventional war heroes.
Actress Kristin Scott Thomas explores the career of her grandfather Lt Cdr William Scott Thomas, a Royal Navy captain who played a big role in some of the key missions of WWII including the Dunkirk evacuation, the Arctic convoys and D-Day.
Hollywood star Toby Jones delves into the remarkable WWII stories of his grandparents Reggie and Doreen Heslewood, whose love endured despite the hardship they faced.
Mark follows his grandfather's POW story, talks to the people whose families were also sent to the Japanese interment camps in Hong Kong and learns about the horrific devastation caused by the fire and atom bombs dropped on Japan.
