The Mulgraves are a rootless, bohemian family who travel the continent, staying in crumbling Italian palazzos, Spanish villas, French vineyards - belonging nowhere, picking up friends and hangers-on as they go, and moving on when Ralph Mulgrave's latest enthusiasm dwindles. Faith, the eldest child of the family, longs for a proper home. But in 1940 Germany invades France and the Mulgraves are forced to flee to England. Faith and her brother Jake go to London while Ralph reluctantly settles in a Norfolk cottage with the remnants of his family.

In the intense and dangerous landscape of wartime London Faith finds work as an ambulance driver, and meets once again one of Ralph's retinue from those distant and, in retrospect, golden days of childhood. Through war and its aftermath, it is Faith on whom the family relies, Faith who offers support and succour, and Faith who is constant and true in her love.