Season 1

The two Arks have to decide to work together or go down together. Who can trust whom?

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

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

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

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

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

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

Sacrifices must be made when a radiation leak sparks crisis

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

The water crisis has come to a head, and a new crisis has appeared in the ship's path, loaded with both threat and promise.

The crew struggles to establish order, while investigations uncover more questions than solutions.

The surviving crew assess the damage to the ship and make work assignments based on the remaining talent. A leadership committee is assembled, and work started to bolster life support.