This supplement is a collection of scenarios that introduce science fiction to the Twilight 2000 game. The book consists of 6 full adventures as follows:

- You're Not From Around Here, Are You?
- The Rumors of Our Extinction...
- The Orpheus Extract
- This Ain't No Weather Balloon.
- Them?
- Warlord

Also included are 4 short scenarios as follows:

- Seeing is Believing
- Electric Slugs
- The Cloud
- Fido, Fidas, Fidat

The supplement is designed to work with both Twilight: 2000 and Merc: 2000.