Earnest young tax inspector Cedric Charlton visits the sizeable Larkin family at Home Farm in the countryside. They have not paid tax in an age and he has come to help them fill in their tax forms. However, they get him drunk and, intoxicated as he already is with the charms of the Larkins' eldest daughter Mariette, he decides to stay with them and share their rural idyll.

Having woken with a hangover but determined to stay at Home Farm, 'Charley' as the family call him ,decides to accompany the Larkins on a strawberry-picking outing where he catches the eye of local vamp Pauline Jackson. She vies with Mariette for his attentions but Mariette wins and the couple decide to get married, with Pop's blessing.

Pop decides to buy the west wing of the country seat of impoverished aristocrats, the Bluff-Gores, initially for scrap, but Lady Bluff-Gore persuades him to go into the property business. Having rebuffed the advances of urbanite Corinne Perigo, Pop is set up when Mrs. Perigo engineers a situation in which he catches hold of nervous Mrs. Jerebohm to stop her from falling over on a boat. Mrs Perigo encourages the other woman to bring a charge of sexual harassment against Pop.

Pop comes across a fun-fair owned by his friend Fruity Pears, though it is losing money. Fruity tells off two teddy boys for causing trouble and they attack and hospitalize him, also injuring Pop. Mademoiselle Dupont arrives to be a godmother at the christenings and is initially upset to find that Pop is not a lord, but he apologizes and she ends up having an enjoyable stay. Pop buys the fun-fair and installs it in his yard where everyone celebrates after the church service.

Whilst Pop buys the adjacent quarry to stock as a trout farm and Charley considers buying a hop farm to supply the local brewery the main news in the village is the arrival of Pieter, a handsome Dane who endears himself to everyone - except perhaps Charley who is resentful of his wife's enthusiasm - with his willingness to work and his skill as a jack of all trades. Until, that is, Charley inadvertently exposes him as being a German, who pretends to be Danish to field hostility following the war.

Whilst the Larkins and John Candy shame some of the villagers into accepting Pieter for himself Charley and Mariette track him down and return him to the farm. They discover that he can stay in England if he marries an English girl and he does have a girlfriend, Eileen, but she feels tied to her selfish, supposedly invalid mother. However the Larkins persuade her to act for herself and she arrives at Home Farm to marry Pieter, now a village hero after rescuing one of the bigot's bullying son from falling in the quarry.

Pop and Ma go to an open day at their son Monty's Naval Training College, where Pop publicly humiliates a bullying instructor who has been making Monty's life a misery. Charley gets his gun to see off Cope's thugs when they try to destroy the hop-garden, for which he has now got his bank loan to purchase. They return when Cope learns that Pop has got the money from the burglary, which he bank-rolled.

Pop runs for rural councillor while Charley and Mariette struggle at the brewery and have issues in their relationship.

Gypsies get involved in Pop's campaign for rural councillor. Charley and Mariette have to work on their marriage, and finalize the deal to buy Bristow's brewery.