Rachel (Caren Pistorius) is running late to work when she has an altercation at a traffic light with a stranger (Russell Crowe) whose life has left him feeling powerless and invisible. Soon, Rachel finds herself, and everyone she loves, the target of a man who decides to make one last mark upon the world by teaching her a series of deadly lessons. What follows is a dangerous game of cat and mouse that proves you never know just how close you are to someone who is about to become unhinged.
The story follows a mother named Karen (Aubrey Plaza) who gives her son Andy (Gabriel Bateman) a toy doll, Chucky, though both aren't aware of its evil nature
When Rebecca left home, she thought she left her childhood fears behind. Growing up, she was never really sure of what was and wasn’t real when the lights went out…and now her little brother, Martin, is experiencing the same unexplained and terrifying events that had once tested her sanity and threatened her safety. A frightening entity with a mysterious attachment to their mother, Sophie, has reemerged. But this time, as Rebecca gets closer to unlocking the truth, there is no denying that all their lives are in danger…once the lights go out.