Cave Boys

In September of 1940, after Germany's occupation of France, a ragtag group of boys in southern France find a mysterious hole in the ground that leads to an underground cave. Instead of the anticipated treasure, they find strange drawings on the cave walls. As the explore the walls and the powerful paintings, their bonds of friendships are tested a they try to keep the cave a secret. When the boys finally convince their teacher to enter the cave, they learn that they've stumbled upon the most significant site of prehistoric art known to modern humans.