While Sam reels from the events of Waltringham and Joe struggles to help him through it, truths are revealed and dangerous plans put into action at the Railyard.
Laura discovers a shocking truth that threatens her life and those around her. Niska continues on her mysterious journey, and must defy all her instincts to survive.
In a dramatic showdown, humans and Synths go head-to-head - but will Mia and Max's peaceful protest cost them their lives? Laura, Niska and Mattie face major decisions.