2. Like It Touched the Sun

The crew struggles to establish a sense of order on the ship. Two investigations uncover more questions than answers.

3. Get Out and Push

All hope seems lost when the crew learns an asteroid is hours away from impact.

4. We Weren't Supposed to Be Awake

When their psyches are put to the test by hallucinations, the crew must race to find the cause.

5. One Step Forward, Two Steps Back

Sacrifices must be made when a radiation leak sparks crisis.

6. Two By Two

The crew must devise a plan after identifying a planet rich in much-needed fuel.

7. A Slow Death Is Worse

The crew discover they're not alone in space and learn more about where they came from.

8. Every Single Person Matters

A new polarizing figure enters the equation as the crew suffers technical difficulties.

9. The Painful Way

After an unpopular decision, discord gives way to deadly mutiny in which loyalties are tested.

10. Hoping for Forever

The situation onboard Ark One seems hopeless after crew members are taken hostage.

11. The Last Thing You Ever Do

The crew must understand their enemy better as they attempt a dangerous rescue mission.

12. Everybody Wins

Ark One tries to broker peace with its adversary but doesn't realize it could cost everything.