With Susannah ostracised, the children's hold on Midwich strengthens. When Paul awakens to the children's true nature, he pleads with Susannah to try to forge a truce with them. Meanwhile Zoe and Sam are galvanised into action by another miracle.

Two years later. The children go behind Susannah's back to express their desire to leave Midwich and Susannah suspects ulterior motives at work. Meanwhile, tragedy strikes one of the families. Paul and Susannah work together to uncover the truth.