1937, the storm clouds of war are still on the distant horizon. Hugh, Edward and Rupert Cazalet, along with their wives, children and servants, travel to the family estate, where they plan to spend the perfect summer. Petty worries and irreparable sorrows, simple joys, shameful secrets and disturbing forebodings - what happens if you collect all this under one roof? A tragicomedy of life with a British accent.