 Lord Ashfordly plays host to a group of ex-offenders, who will be working on the estate under the supervision of Eric Grey as part of a rehabilitation programme. But not all of the young men are that keen on getting rehabilitated and only want to make trouble. For starters they steal Oscar Blaketon s car when he refuses to serve them at the pub. Dorothy Plum is complaining that someone is disturbing her little dog Marigold, but a search of her garden and the road outside turns up nothing. The old lady gets really worried when the dog disappears and she offers a big reward to get it back. Aunt Peggy is not a woman to let such an opportunity pass. She gets a similar dog with the help of an old friend and tries to return it to its "rightful owner" after a small makeover.