Micheal Cera and Jack Black star as Zed and Oh, two wandering men stumbling through the early chapters of Genesis, encountering Adam and Eve, Cain and Abel, Abraham and Isaac as they go along.
Black and Cera told MTV:
"It's not prehistoric, it's just pre-Christ. It's like an old, biblical tale. Cane and Abel type of stuff. Just two dudes wandering through early civilization," Black explained. "It's kind of like 'The Meaning of Life' or 'Life of Brian' — a funny look at biblical tales."
"A lot of the humor comes from that — the fact that it's an adventure," Cera added. "We're walking across these mountains, and I think it's gonna look really cool. Hopefully it'll be kind of epic."