Everett and the crew continue their efforts to save Destiny while holding off the Lucian Alliance invaders.

Desperate for food and water, Rush directs the ship to a planet that has been locked out of Destiny's controls. Young and Wray clash over what to do with the Alliance prisoners.

The crew encounters a ship remarkably similar to Destiny, which may hold the key to their returning home.

Chloe behaves in a bizarre way, prompting a search of her quarters, where Lt. Scott finds a journal penned in an alien language. Elsewhere, Eli copes with his mother's medical condition.

Rush and Young investigate an abandoned alien craft which is just outside the Destiny. While they do this, the crew onboard the ship find the bridge and discover that Rush is responsible for the countdown clock not activating when the ship emerges from FTL.

Simeon makes his escape from Destiny, sending Nicholas Rush on a vengeful mission. But Young and Greer attempt to retrieve Simeon unharmed.