In the movie"Forest Demon", Lucas and Mathias, two 8-year-old boys whose fathers work as woodcutters in the Vosges forest, share a deep bond of friendship. Tragedy strikes when Lucas' father accidentally hits Mathias, who is riding his bike down the mountain. From the back seat of the car, Lucas witnesses in horror as his father callously disposes of his friend's body by throwing it into the ravine. With just one glance, Lucas understands the gravity of the situation and the evil lurking in the forest.