Former convict Bob is forced to live with his uptight son Gruff, sympathetic daughter-in-law Alice and granddaughter Carys whilst on parole.
Gruff is a new father whose own father, Bob, suddenly comes back into his life after a long absence.
Bob is a convicted fraudster, released from prison on licence, who wants to inveigle his way back into his estranged son’s life. He’s charming, optimistic and warm. People like him. That’s why they gave him so much of their life savings. Gruff’s wife Alice is quite taken with the charming Bob. She would be – he’s a fraudster – that’s how he works.