Set in a parallel present where the latest must-have gadget for any busy family is a 'Synth'—a highly-developed robotic servant that is eerily similar to its live counterpart. In an effort to transform the way their family lives, a stressed-out father purchases a refurbished Synth, only to discover that the machine possesses a secret: it is part of a group of sentient Synths who have escaped their creators and are hiding in plain sight. As the series progresses, the boundary between human and machine blurs, raising profound questions about consciousness, ethics, and the nature of humanity. The narrative follows the Hawkins family as they navigate the domestic complications of living with a Synth, while simultaneously tracking the dangerous journey of the sentient Synths as they fight for survival and recognition in a world that fears their existence.