It is 40,000 BCE, and Neanderthals believe in spirit gods. Og is an ancient, exceptionally intelligent Neanderthal. As he sits in his cave sheltered from the vicious storm that rages outside, he knows there must be a better way to survive. Now all he has to do is convince his tribal troupe that he has the answers to their fears and apprehensions. After he convinces Chief Olo that he can appease the spirit gods and end the storm by performing...