Watch Kingdom of the Elves

A group of elementary school children are wandering through the woods of New Hampshire when they discover a strange door in the forest floor. Lifting the door up, they find that it descends into a woodland realm of fantastical creatures and elements. They encounter Fen, the Lord of the Elves, who seeks their assistance with securing the return of a special amulet which will allow them to collectively join the human world and thus escape from a strange new threat which has emerged in their realm. The school children are tasked with assisting their new friends in this.