Arthur, Grace, and Julian enter the bowels of Heart Enterprises to destroy it, but meet unexpected resistance from Karma, Chris, and Aki.

Arthur rises to prominence as the new Primo but soon learns what has happened to the old Primos... and will happen to him. Meanwhile, a documentary crew captures Karma's rise to power, and Julian hosts the ultimate party.

The final day of the race comes, and all masks are off as Old Man Heart reveals his plan. Meanwhile, Julian presents his magnum opus, and Arthur believes that Grace is dead.

Arthur stumbles into Cronenburgh, a town near the Scar that appears to be an idyllic haven. However, when Grace follows Arthur there, she discovers that Cronenburgh is anything but. Meanwhile, Julian is terminated at Heart and quickly escapes before it becomes literal. And Aki finds a car so that she and Chris can escape LA.

Grace ends up at the Scar with a badly injured Arthur, and seeks help at a nearby Chinese restaurant. Meanwhile, Arthur finds himself on a vision quest trying to find a way out before he dies.

Sheriff Leon asks Arthur to go undercover and help him take out some electricity-using rebels that threaten his power in a powerless town. However, Arthur soon discovers that he's on the wrong side in the power struggle. Meanwhile, Grace and Julian sit down for a drink, and Aki copes with her new feelings for Chris.

Julian is demoted to janitor and the Gentleman is made the new MC of Blood Drive. To get back to his old position, Julian convinces Chris to help him. Meanwhile, Arthur and Grace discover that the Gentleman is even worse than Julian and try to steal the implant control box from him.

Amazons--former patients at Claireville--have formed their own utopia and capture Grace and Arthur. Meanwhile, Domi and Cliff have a martial spat, Chris discovers some of the modifications Aki has made to him, and Julian gets news of his personal cancellation from Heart.

Twins Jack and Diane come seeking vengeance against Julian for infecting their town with a deadly virus and killing everyone else.Meanwhile, Aki presents Chris with the bill for fixing his eye.

Arthur and Grace go to Kane Hill to rescue Karma, and discover that things aren't as they seem. Meanwhile, Aki performs fluid extraction on Chris.

Arthur and Grace are forced to take a detour through Steel City, and discover a band of scavengers... and the cannibalistic Glimmers. Meanwhile, Julian takes notes from the network execs, and Cliff and Domi consider their relationship.

Arthur and Grace pull into Pixie Swallow to see what's on the menu, and discover that they and the other racers are the meal du jour. Meanwhile, Chris explores Heart, and Justin takes a meeting with the Heart CEOs.

Iin the not-too-distant future, oil is $2,000 a barrel and cars run on blood. Cop Arthur Bailey gets sucked into the Blood Drive, an anything-goes cross-country race where he's forced to partner with an attractive driver, Grace. If they lose, then they both die.