A group of friends living at the dawn of human civilization are the first to discover necessities like fire and the wheel. We'll watch as they stumble onto humanity's best, and worst, innovations. Art. Alcohol. Fashion. Racism. Small talk. And, much to their confusion, monogamy.

• Anna Kendrick
• Zac Efron
• Jillian Bell
• Lamorne Morris
• James Adomian
• Stephanie Beatriz
• Ed Begley Jr.
• Sam Richardson