When, like Ruth and Roger Mallard, you inherit a large house but no money to keep it up, one thing you can do is turn it into a guest-house. And having made up their minds, the Mallards decided that River Lodge was to be a guest-house of the very best kind. The first week’s guests were specially chosen - or self invited: a rich aunt; a theatrical producer and the lovely Felicity; Felicity’s sister and her twins; a famous artist and the amiable “Goosey”; the fattest dog in fiction; and a not-so-rich but very comic uncle and aunt.

High Ambo, in England, is the setting. It is winter, and Caroline West - a very human, placid, and unexcitable person - has gone there to escape her late husband's relatives. Like so many good-hearted people, she is immediately put upon. Caroline's sister Iris comes first, full of impulse and determination to be a reporter - an ambition abruptly deflected by a handsome young schoolmaster - an authority on birds. Then comes Robert, with his sweet, ingenuous fiancée Polly, and thus making the three-ring circus of a genuine Cadell household.

 At Rushing Farm, the Manning household — with Aunt Flora at its head — lives in harmony. With the appearance of George Manning, however, peace is at an end. George is a successful actor, spoilt and selfish. He sees nothing at Rushing but discomfort and boredom, and his relations hope that he will carry out his repeated threat of departing by the next train. But with the arrival of Brian Lorimer and the enchanting Angela Reynolds, George finds something at Rushing which proves a greater attraction than his comfortable existence in London. 

Mrs. Belchamber was not invited but Mrs. Belchamber came to stay. The changes she introduced into Scotty’s topsy-turvy Kentish farmhouse were past belief. But though Christopher could not help feeling some concern that he had landed on his friend a woman of character as well as three lively French children, the Belchamber influence on his own friendship with Cressida was admittedly an almost unmixed blessing.

"A week at Trysting had its trials", Leigh thought. A round of odd jobs with Aunt Elvira, bad poetry with Aunt Rosande, and bouts of hay fever with Aunt Dolly were not his idea of a restful holiday. Nor did his cousin Raymond, who seemed sunk in gloom, help matters. Or a mystery Leigh could not fathom about someone burning down the old house and the disappearance of the family silver. But meanwhile there was a Hampshire summer, and there was Auriol. Auriol, Leigh thought, was lovely - but he didn’t want to live on eggs.