A young boy named Peetah Cuckole (Finn Wolfhard) is exploring the woods when he finds a glowing green amulet embedded into the trees. He grabs the amulet and welds it into a necklace, he gives the necklace to his crush Sarah (Elise Cumayayay). The next day he notices something off about Sarah.

Peetah notices Sarah’s eyes are glowing green. She has been possessed by a dark shadow spirit! Sarah is violent and won’t let anyone touch her, but Peetah somehow manages get the amulet off of Sarah. The dark shadow spirit is sucked out of Sarah and appears to be going back into the amulet, but then the dark shadow spirit flys off into the sky unleashing terror on their town.

A green sky and fog covers the town. The radio station and mayor release statements and warnings to stay indoors. Peetah sees his neighbor go into the fog, only to come out possessed by the dark shadow spirit. Worried, he and his family lock all their doors and windows and ration their food.

A horrible storm with green lightning rolls through Cumsdale. The Cuckole family begins to discuss what is going on and how to handle it. Meanwhile, the town mayor gets struck by the lightning and was transported into the shadow realm where he gets tortured by otherworldly beings.

Bethany Cuckole finds an old puzzle box in her basement. She notices the amulet fits perfectly inside a divot in the box. It lets out an electric shock that brings her into the shadow realm. Bethany sees the mayor being tortured by the creatures. Bethany is able to go unnoticed and hide, and so she begins to make a plan to escape.

After wind from the storm causes a tree to fall on their house, the fog from outside seeps in and infects Peetah’s parents. Peetah is able to run to his bedroom in time and lock the door to stay safe from his parents. He puts a mask over his face and crawls out his window to the outside, where he goes looking for his friends.

E

E

Z

B