Davina McCall and Nicky Campbell present the stories of people searching for siblings. Steve Austin and Moira Tonge only found each other as adults, but then at their mother's funeral discovered they also had an older sister. Lisa Irvine also only found out about her brother Nicholas as an adult, when she read her adoption paperwork and wants to know what happened to him and her birth mother.

With his 87th birthday approaching, retired merchant seamen Roy David searches for his daughter Cheryl, who he has not seen for nearly 60 years. After meeting his first wife Sylvia in New York while working there, the couple had a daughter, but tensions within the family lead to him separating from his wife, and eventually losing touch. Now, Roy seeks forgiveness from Cheryl and hopes to make amends.