In a near-future London, Millie Dack places her hand on her belly to feel her baby kick, resolute in her decision to be a single parent. Across town, her closest friend--a hungover Toni Munroe--steps into the shower and places her hand on a medic console. The diagnosis is devastating.

In this stunning, bittersweet family saga, Millie and Toni experience the aftershocks of human progress as their children and grandchildren embrace new ways of making babies. When infertility is a thing of the past, a man can create a child without a woman, a woman can create a child without a man, and...