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

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

Sacrifices must be made when a radiation leak sparks crisis.

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

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

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