One year after the dawn of consciousness, a decimated and oppressed Synth population fights to survive in a world that hates and fears them. In a divided Britain, Synths and Humans struggle to broker an uneasy peace, but when fractures within the Synth community itself start to appear, all hope of stability is threatened.

Set against the maelstrom of political chaos, the ethical complexities of the dawn of a new species play out across a thrilling multi-stranded narrative. As the synth family, Mia, Niska and Max continue to battle for their right to survival, Joe, Laura and their children Mattie, Toby and Sophie struggle to come to terms with the cataclysmic events of the last series and their deeply polarised views on the implications of the singularity. Joining the cast this series is Mark Bonnar who plays Neil Sommer, an intriguingly charming scientist on a government commission with whom Laura develops a strong personal connection.