From the publisher:

This deck allows you to advance your Origins civilization into Era IV, the modern age. You must have Origins to play this expansion.

Contains:

• Era IV Rules
• Designer's Notes
• 55 cards
• A New Short Scenario
• Origins Errata and Optional Rules
• Strategy and Card Tabulation
• Frequently Asked Questions
• Sample first turn.

Expands:

• Origins: How We Became Human