When the quiet village of Midwich is hit by a supernatural event, its residents fall unconscious and soon wake up to find their lives forever changed by the mysterious incident.

As Midwich recovers from the devastating effects of the blackout, a truly horrifying discovery is made that polarises the villagers and a town meeting is called.

Three years after the blackout, Midwich's placid state is interrupted by the arrival of a new child. The children are entering the second phase of their development, and Susannah notices changes in their behaviour and makes a terrifying discovery.

Desperate to understand the source of the children's violent instincts, Susannah takes a risky step, whilst Paul's attachment to Nathan is challenged when he investigates Amrita's disappearance.

As the children's grip on Midwich continues to tighten, Zoe and Sam face a discovery that encourages them to escape for good while Paul seeks to launch his own inquiry.

Two years later, the residents of Midwich are living in relative peace and harmony again, but a government initiative threatens to upset the village's restored balance.