Inspired by Kris Straub's "creepypasta" tale, season one deals with one man’s obsessive recollections of a mysterious children’s television program from the 1980s, and his ever-growing suspicions about the role it might have played in a series of nightmarish and deadly events from his childhood.
Child psychologist Mike Painter investigates the 1988 murders of several children, including his twin brother, which may involve a children's TV show that has started airing again.
Marla agrees to help Mike investigate the murders; Marla is horrified to learn a secret about what happened in 1988 that's been hidden since that time.
Mike must convince Gary that Candle Cove is behind the murders before he takes justice into his own hands; Marla, Jessica, and Amy frantically search for Mike before it's too late.
Mike's daughter Lily mysteriously arrives in Iron Hill, leading to more information about the murders of 1988; Mike and Jessica take drastic measures to heal the past and protect Lily from Candle Cove.
Mike and Amy learn that the creator of Candle Cove isn't who they think he is; a brutal crime shocks the Iron Hill police force.