Midwich, a small English commuter town, is liberal and aspirational, populated by families and affluent streets. A place where nothing much happens - that is until the twilight hours of a summer's day when a sleepy corner of Midwich is plunged into panic. People pass out on their feet without warning, without reason. Anyone who tries to enter meets the same fate. And nobody can understand why. When the mysterious blackout is lifted, life for those affected returns to apparent normality - except every woman of child-bearing age inside the zone has suddenly and inexplicably fallen pregnant. As news spreads and tensions simmer, it is up to gifted psychotherapist Dr Susannah Zellaby (Keeley Hawes) to help support those affected. Susannah's own daughter, Cassie (Synnøve Karlsen), has fallen pregnant and Susannah harbours deep concerns about who, or what, is behind this phenomenon. Local officer DCI Paul Haynes (Max Beesley) is tasked with maintaining order but unbeknownst to them all, a terrifying force is building in Midwich. These children - potential parasites - flourish under the very love and care that their families give them. Who are these children? And what do they want?
