Gary carries out the final days of his prison sentence aboard the Galaxy One, when he meets Mooncake, an alien who is being chased by bounty hunters; Gary swears to keep Mooncake safe, not knowing the alien is a planet-destroying super weapon.

Gary and Avocato must chase down the ruthless bounty hunter, Terk, before he can tell the Lord Commander that Mooncake is aboard the Galaxy One.

Gary tries to hide Mooncake safely away on the planet Yarno; Gary and Avocato are trapped in a terrifying mind-puzzle; Mooncake is forced to fight in a combat arena called the Deathcropolis; Quinn investigates the gravitational disturbance.

After the Galaxy One is hacked by the Infinity Guard, Gary has to harvest energy from a nearby star to reignite the engines; the radiation poisoning from the star sends Gary into a trance of painful memories; Gary and Quinn are finally reunited.

Quinn realizes the only people she can trust are Gary and the crew of the Galaxy One.

Gary goes on a mission to save Avocato's son, Little Cato, from Lord Commander's Prison Planet, but it turns out to be a trap; Quinn sees Gary's vlogs and understands that he is someone who would risk his life for any of his friends.

Gary grapples with his future when he learns that his prison sentence is over.

Gary and the crew encounter a Titan, who tells them how to close the breach in the fabric of space.

The finale to our epic adventure. An all out battle ensues as The Lord Commander does everything in his power to capture Mooncake, and stop Gary and Quinn from closing the entrance to Final Space.