Wander and Sylvia visit a small kingdom that Lord Hater is attempting to conquer. Chaos ensues when Hater is challenged to win the Greatest in the Universe contest. The pilot of Wander Over Yonder was late4r reanimated and turned into the episode "The Greatest"
Lord Hater sets out to control and win everything in the universe, including conquering The Binglebops and their planet, but his plans are soon diverted when he finds himself accepting Wander's series of challenges to prove once and for all that he truly is the greatest in the entire galaxy.
Wander and Sylvia try to soften the heart of a ferocious flying dragon by reuniting it with its lost egg, but it's Sylvia who ends up needing a lesson or two on being gentle and nurturing.
Wander discovers the perfect spot for his celestial picnic - right next to Lord Hater's epic battlefield, making it extremely difficult for Hater to focus on his battle against archenemy Emperor Awesome for ultimate cosmic power.
Wander and Sylvia are trying to escape from Lord Hater's minions and get off the planet but Sylvia's plans can't overcome Wander's need to help others.
Wander's usual good deeds at helping anyone in distress suddenly become short-lived when he begins helping for the wrong reason. He and Sylvia work hard to try and fix Wander's mistake.
Fed up with Wander's constant botherings, Lord Hater sends Peepers to trick Wander into entering the ship so he can trap him and throw him in the ship's prison. But when Wander starts having a lot of fun, it makes the task extremely difficult for Peepers to succeed.
When Wander and Sylvia board an abandoned spaceship, they encounter a horrifying alien monster that is set on eating them, who Wander names, Captain Tim. While Sylvia sees the wild beast as a threat, Wander takes a liking to the ferocious little monster and tries to train it to be his pet.
Wander and Sylvia run out of orbal juice and crash land on Doomstone, a planet inhabbited by bad guys. Sylvia has Wander act like a bad guy like the others so she can get the juice, but Wander's bad guy attitude winds up going to his head.
While visiting Baaaaa-halla, Wander and Sylvia encounter a mean and greedy troll who's been trying to steal the food for the big feast Prince Cashmere and his goat army are holding. Sylvia is determined to help the goats fight the creature, but Wander doesn't help the right way and sits out.
When Wander and Sylvia have to deliver a box to "Glen", Wander has to resist opening the box to find out what's inside even if it drives him mad.
When Wander gets lost on a dangerous planet, Sylvia must learn to trust Wander's magical hat and its mysterious ways, in order to find her buddy before it's too late.
Westley, the smallest member of Lord Hater's Watchdog army, accidentally gets left behind during a search for Wander and Sylvia. Westley has Wander and Sylvia as his prisoners so he can return to Lord Hater, but Wander seeks to make him a new friend.
Due to Commander Peepers' inability to capture Wander and Sylvia, Lord Hater hires three bounty hunters to capture them. This doesn't go well with Commander Peepers who sets out to thwart the bounty hunters and to apprehend Wander and Sylvia for his own glory.
A spa planet's inhabitants are in need of help as each of the planets they move to is destroyed by a space puppy.
A cowardly hero enlists the help of Wander and Sylvia to rescue a princess but Wander's overeagerness to save her himself gets in the way of him.
During Lord Hater's birthday party, a captured Wander tries to make his birthday a happy one although Hater merely wants to see Wander grovel in fear.
When getting a soda for Sylvia at a hot reststop, Wander finds himself caught between helping others and helping Sylvia.
Competing in a galactic race, Wander finds out why Sylvia is called "The Timebomb" by some and works to calm her down.
Lord Hater competes for the affections of an alien queen in order to inherit her army and take over the universe.
Wander tries to outdo an elder tourist who has seen more of the universe than he has.
Sylvia wakes up imprisoned on Lord Hater's ship with a sleeping Wander and must fight to escape.
Wander must prevent a sleeping Sylvia from waking up during the night.
A lonely planet named Janet tries to keep Wander to herself.
Lord Hater and Commander Peepers brainstorm plans to capture Wander and Sylvia.
Sylvia attempts to prevent Emperor Awesome from destroying a planet with his partying and Wander from joining the party.
Wander and Sylvia try to return a giant lost baby to its parents, which is complicated by their different parenting methods.
Wander forces Sylvia to go on a quest to return a sock.
Wander and Sylvia go into a place where there can be anything. But when Wander doesn't want to leave, Sylvia tries to convince him to return home.
Lord Hater turns to bullying the universe just to make himself feel better.
Lord Hater and Sir Brad Starlight team up to fight Wander.
Wander guides a family of alien birds through the perils of an active volcano.
Wander goes out of his way to help a cute little kitten, Little Bits, only to find that she is secretly a bounty hunter luring him into a trap.
Wander convinces Sylvia to go on a date with Lord Hater, after he gets stood up.
Lord Hater gets trapped on his own prison planet and must play the role of Wander's best buddy to survive.
Wander is handing out gifts to every new friend he’s made and sneaks onto Lord Hater’s ship to give him and the Watchdogs gifts.
When gifts strangely start appearing on Lord Hater's ship, turning their recipients into zombies, Lord Hater and Commander Peepers must escape from whoever is giving the gifts.
Sylvia is recruited by a rebel commando team to help steal Lord Hater's latest secret weapon.
One strange day, Wander is unable to find anybody who actually needs his help.
When Sylvia's old partner Rider (voiced by Will Arnett) shows up, Wander wonders if the roguish Rider makes a better teammate for Sylvia than he does.
Lord Hater interrupts a TV broadcast to once again declare himself "the Greatest in the Galaxy", and is about to destroy Wander. Wander sees that they are being broadcast live and decides to give some shout-outs to a few friends.
In the second take of his address to the galaxy, Lord Hater instructs Wander not to talk. His address goes off without a hitch, until he notices Wander's goofy smile. He tells him to shake in fear, but Wander keeps doing goofy faces until Hater tells him he will have to pull the broadcast, which makes Wander shake in fear. Unfortunately, soon after, he goes back to his ridiculous smile and this causes Lord Hater to cut off the transmission.
In the midst of the third take of Lord Hater's address to the galaxy, Commander Peepers asks him what he is doing. Peepers asks if he's trying to destroy Wander again, which Hater denies, until he accidentally pushes the button on the podium lowering Wander. Hater attempts to raise Wander back up, but he is already caught. Peepers tells his superior that he needs to focus on conquering planets before other villains do so. Hater then tells Peepers that he already told everyone that he was going to destroy Wander, and if he doesn't follow through, he will appear weak. Peepers says under his breath that it's a little late for that. After a static cut, we see Hater about to destroy both Wander and Peepers.
In the fourth take of his address to the galaxy, Lord Hater gets irritated due to Wander singing while he is stating his address. Hater presses the button on the podium angrily lowering Wander while he is singing. Hater tells him to stop it. Wander then tells him that he is singing his theme song however Hater said that he is making it sound stupid. Wander asks Hater to show everyone how to sing it correctly. After the static cut, Hater is attempting to tune his electric guitar and starts singing, after some of failing tries, Wander suggests about how to tune it but Hater denies it and throws the guitar through the camera.
Wander is making random noises then realizes the camera is rolling and tells everyone that Lord Hater had to go to the bathroom, but will return in a moment. He decides to check on him and easily gets off the X. Suddenly, a Watchdog janitor appears and sees the camera and decides to do a breakdancing routine. Hater returns and asks the Watchdog what he's doing and then realizes that Wander is missing.
Lord Hater's broadcast is interrupted by an interloper.
Wander and Sylvia's world is turned upside down with the arrival of a new villain that threatens Lord Hater's status as the Greatest in the Galaxy.
Lord Hater finally captures Wander and Sylvia.
Wander and Hater each struggle in their own way when making breakfast.
Wander picks up a loopy Lord Hater from the dentist.
Wander faces a villain.
Wander is split into multiple personalities.
Lord Hater fires Commander Peepers.
Wander and Sylvia are stuck between stopping a planetary invasion and helping an elderly lady fix her broken-down ship.
In order to work his way to the top of the Villain Leaderboard, Lord Hater must try to ignore Wander’s game of interplanetary tag.
Lord Hater ditches Peepers to party with Emperor Awesome.
Sylvia buys Wander a video camera.
Wander holds a party for the rulers that Hater locked up, and Hater tries to slip into the party .
Hater meets his idol, only to learn that he's become good thanks to Wander. Now, Hater tries to make him evil again.
Wander discovers Dominator is a girl and tries to set her up with Hater.
Sylvia distracts Wander with a series of ridiculous adventures to keep him from delivering Hater’s love letter to Dominator.
Peepers devises a plan to stop Lord Dominator, but all Hater wants to do is impress her with his sweet new vehicle.
Wander convinces a down-on-his-luck villain to spend a day looking on the bright side of things instead of collecting the souls of others.
Andy the Watchdog interviews Lord Hater for his video blog.
Wander makes a white lie that causes some crazy consequences, threatening the planet to be discovered by Lord Dominator.
Lord Hater steals Wander's hat to impress Lord Dominator.
To save the universe, Wander puts his finger into a black hole, plugging it up, but now he's stuck there unless Sylvia can find a replacement for him.
Commander Peepers and Sylvia work together to stop Hater and Wander from singing the same song over and over again to get Dominator's attention.
Lord Hater releases a propaganda cartoon on how awesome he is in an attempt to get Lord Dominator's attention.
Dominator sends out one of her bots to get Volcanium X for her, but it get damaged and Wander helps it out in finding the stuff.
Sylvia takes Wander to meet her family, only to reveal she ran away from home.
Lord Hater and Peepers spy on Emperor Awesome as he tries to get Dominator to be her girlfriend.
In this special half-hour musical episode, Lord Hater enlists Wander's help to finally ask Dominator on a date.
While rescuing some kids from Lord Dominator, Wander and Sylvia hear tales of their heroics as the kids know them.
To hide from Lord Dominator, Hater and his crew move into Suburbia to re-coop, but Hater gets really annoyed with Emperor Awesome, his new neighbor and fights with him.
Wander fights a massive case of the giggles while trying to impress a race of beings with unusual faces.
When Wander and Sylvia accidentally buy Time Orbbles, Sylvia must keep Wander focused or risk being lost in time forever.
When a mysterious new rebel begins fighting Dominator's forces, Sylvia becomes jealous.
Dominator takes a night off to explore a nearby city and makes an unlikely new friend, Sylvia.
Lord Hater's pet goes missing, and Hater teams up with an archnomorph hunter named Ripoff to find him.
Wander is too scared to think straight as he and Sylvia journey inside a creepy forest to find an ancient power to use against Dominator.
After Wander comes down with a cold, he depends on Sylvia to take on his many duties helping others.
Wander discovers an adorable new species and accidentally exposes them to an entire new world.
Lord Hater, Peepers, Wander and Sylvia fight over the Robomechabotatron, the universe's great robot protector, to take down Domnitaor.
Sylvia and Wander do everything in their power to restore a flower from all the destruction Dominator brought down to the area.
Wander and Sylvia lead a band of rebels in a final stand against Dominator while Lord Hater rushes to conquer a planet.
