• Air date: 09 Nov '23 10 episodes
      Rocketing into the new millennium in the eight years since season three, Happy Valley has rapidly expanded its footprint on Mars by turning former foes into partners. Now 2003, the focus of the space program has turned to the capture and mining of extremely valuable, mineral-rich asteroids that could change the future of both Earth and Mars. But simmering tensions between the residents of the now-sprawling international base threaten to undo everything they are working towards.
  • List of Episodes (10)
    • 1. Glasnost

      09 Nov '23
      Eight years later, a new mission begins: Capture an asteroid. Aleida and Danielle are still haunted by events from the past.
    • 2. Have a Nice Sol

      16 Nov '23
      New Helios employees arrive on Mars as NASA undergoes major changes.
    • 3. The Bear Hug

      21 Nov '23
      Miles tries to make ends meet. Margo finds herself pulled into a dangerous situation.
    • 4. House Divided

      30 Nov '23
      An accident on Mars strains relationships, while Miles embarks on a risky venture.
    • 5. Goldilocks

      07 Dec '23
      A discovery sends teams across Earth and Mars scrambling for answers.
    • 6. Leningrad

      14 Dec '23
      Unlikely partnerships are formed at a high-stakes international conference.
    • 7. Crossing the Line

      21 Dec '23
      A group on Mars takes drastic measures. Margo grapples with a new assignment.
    • 8. Legacy

      28 Dec '23
      Plans are made with interplanetary ramifications. Ed begins working with an unexpected partner.
    • 9. Brazil

      04 Jan '24
      Things start to go awry just as an important mission approaches a critical juncture.
    • 10. Perestroika

      11 Jan '24
      Tensions on Earth and Mars come to a head.