The everyday lives of a wealthy British Indian family are turned upside down after dark family secrets are made public after a family bereavement.

In 2027, in a chaotic world in which humans can no longer procreate, a former activist agrees to help transport a miraculously pregnant woman to a sanctuary at sea, where her child's birth may help scientists save the future of humankind.

A saga of class relations and changing times in an Edwardian England on the brink of modernity, the film centers on liberal Margaret Schlegel, who, along with her sister Helen, becomes involved with two couples: wealthy, conservative industrialist Henry Wilcox and his wife Ruth, and the downwardly mobile working-class Leonard Bast and his mistress Jackie.