Olivia, the eldest daughter, has returned from treating an epidemic abroad and must go into quarentine for seven days. Her mother has decided it's the perfect opportunity to spend some 'sepcial time' together. Her youngest sister wholeheartedly disagrees. Her father isn't allowed an opinion. When no one can leave the house, seven days for the Birches feels like an eternity. Especially when they're all harbouring secrets. One of whom is about to come knocking at their door . . .