Leela has to work on her anger issues after being goaded into entering a Space Demolition Derby with the Planet Express ship and Bender has to work on his lack of imagination after seeing the kids have fun playing Dungeons and Dragons.
The Planet Express crew learn Mom is profiting by creating a fake shortage of Dark Matter and set out to stop her but can the Professor recall where he put an important energy crystal. And Bender undergoes therapy at a Robot Insane Asylum.
When Bender's out of control imagination mixes with the Die of Power it creates an alternate Lord of the Rings influenced universe where the Planet Express crew must go on a journey across strange lands to destroy the Die of Power.
The Planet Express crew continue their journey to destroy the Die of Power, which has a negative effect on Fry. Mom and her sons make a last gambit to get the Die for themselves and Leela tries to convince the Centaurs to join the battle.
When a new Mars Vegas is built, the crew wrangle invites to the opening weekend and the 3009 Universal Poker Championship. Fry discovers he has a new ability to read people's thoughts and Bender starts a secret affair with Donbot's wife.
Leo Wong is building a galaxy sized miniature golf course regardless of the damage it causes, so Leela joins some protesters to oppose him, while Fry joins a group with the same goal of stopping Leo, but President Nixon has other ideas.
Bender and Zapp Brannigan team up to capture Leela by using an unwitting Fry. Fry learns more about the Dark Ones, who strike at a new victim. And the Nimbus chases the Feministas across the miniature golf course galaxy.
The Feministas face the Supreme Court over their 'crimes' but Bender has his own ideas about their fate. As Leo Wong prepares to destroy the Violet Dwarf Star, Fry must decide what the right thing to do is. Then the Dark One arrives.