Sam Coyne is out hunting sand whales when he stumbles across a mysterious woman on the run from a fleet of destroyers.

The Sand Pirates dive under the dunes with Maya but are locked down by sand anchors, causing the pressure and temperature in the ship to rise.

Sam takes Maya to a hidden shelter constructed in the distant past that's filled with ancient technology.

Sam and Mimay set off in pursuit of Gido, but their bike is no match for the Theseus sand cruiser.

The Bardanos finds itself in a strange cave filled with fresh water and life; Bainas shoots off Gido's mask.

Ozma's nature is revealed, and it's time for Maya to make her choice: begin a new era with the life inside the zone, or allow humanity to remain in control of a dying planet.