The extraordinary and emotional story of a woman desperately trying to save her dying husband's life. Samantha Lamb is in a race against time. Her husband Andy is dying from kidney failure and urgently needs a transplant, but was unable to find a donor, until Sam was tested. It was a million to one chance, but his wife of four years turned out to be a perfect match. With Andy's condition continuing to worsen, will Sam succeed in time to save him?