TV and radio presenter Nicky Campbell was adopted a few days after being born in 1961. Having already traced his biological parents some years later, Nicky now decides to trace the history of his adoptive family. He learns about his father Frank's experiences as an officer in Burma during the Second World War, and travels to his grandfather's birthplace in Brisbane, Australia.

The genealogy show celebrates ten years and 100 episodes with a look back at the outstanding moments of the award-winning series. This one-off special features the shocks, surprises, tears and laughter that have marked the 100 celebrities' extraordinary journeys into their family histories. It remembers the dramatic highlights, from Jeremy Paxman's tears to Boris Johnson's astonishment at his incredible royal connections, as well as the sometimes inadvertently funny bits.