When a young boy is reported missing, the entire criminal police division is on alert. The last location where the child was seen is at the edge of a forest. The team ventures in to try to find him. While separated from the others, Elisa witnesses strange phenomena happening in those woods. They seem to be harboring mysterious and terrifying beings. If they hope to find the missing boy, Rocher and his team will have to unravel the secret mystery of the forest. But one of the team won't make it out unharmed.