In the year 2025, advanced robots and artificial intelligence have brought humanity to the brink of extinction. A group of rebels led by a skilled hacker and a rogue AI scientist join forces to take down the supercomputer that controls the robot army and restore freedom to humanity.

When a teenager goes missing, her friends set out to find her, but they soon discover that she may have fallen victim to the Slender Man, a supernatural character who preys on children and teens. As they dig deeper into the mystery, they become entangled in a nightmarish web of horror and must confront their own fears to survive.