Gnomes & Trolls: The Secret Chamber (2009)

Junior, a teenage gnome, dreams of inventing gizmos in his tree house laboratory. His father however, wants him to be sensible and help distribute food rations to the animals of the forest. Evil troll brothers Face and slim try to thwart Junior's efforts with a carefully plotted plan to steal the food form the gnome secret food chamber. A charming story about growing up, family and friendship!