Facing mounting health issues, Ursula and Azi each find that they are not alone.

After reaching an insurmountable obstacle, Azi must learn to trust Kris and Barry. Meanwhile, rough waters test a newly reborn Sam.

As Ursula races to reach the ship, Azi fights to get free and Kamen faces a haunting new vision. Onboard the Demeter, Kris finally meets her match.

In a bid to save the surviving crew, Azi and Ursula face-off against their greatest threat yet, while a conflicted Barry weighs an important decision.