It is the 17th century and a wall is built around a great house. Wychwood is an enclosed world, where everyone has something to hide after civil war, where dissidents shelter in the forest, lovers linger in gardens, and migrants, fleeing the plague, are turned away at the gate. Centuries later, another wall goes up, dividing Berlin, while at Wychwood, over one languorous weekend, erotic entanglements are shadowed by news of historic change. A little girl, Nell, observes all