Davina McCall and Nicky Campbell follow three stories of sons coming to terms with the past, including Marc Wolfe's struggle to form a bond with his birth mother Esther, who lives in New Zealand. However, his search for identity didn't end there as researchers were able to reunite him with his birth father David, and the pair have grown close. One significant hurdle remained in the form of introducing David to his adoptive father Terry, and cameras were there as Marc introduces his two dads to each other.