The twins Yuamu and Yuhi are grade-schoolers who live in Mutsuba Town, and they manage a consultancy known as Ultraterrestrial Trouble Solutions, or UTS for short. When they were looking for an alien that’s been kidnapping cats, they encountered an alien warrior named Yudias on a stranded spaceship.

UTS has a new client, who turns out to be Sogetsu Manabu, an agent of the MIK organization! He demands that Yudias turns himself in for being a troublesome illegal alien. And so, Yudias Duels against Manabu, with his freedom on the line!

There has been a series of attacks in Mutsuba Town. One victim was looking at cards. Another just finished a drawing. And then there’s Yagi from UTS. At first glance, there seems to be no connection between the victims, but as it turns out, they all have something in common…

Chupataro lured Yudias to a garbage disposal area. Thanks to his inborn abilities, Yudias was able to overcome Chupataro’s many traps, but he still ended up getting captured! Meanwhile, Yuhi, who was panicking, also arrived at the garbage disposal area…

Yuhi is angry that the clothes he sent to a dry cleaning shop are soaking wet, so he confronts the shop’s manager about it. But as it turns out, the manager is actually Kawai Tell, the alien who stole Yuhi’s Earthdamar! Yuhi challenges Kawai to a Duel, but since his Duel Disk is soaking wet, he can’t activate it…

Yuhi and his friends investigate an urban legend.

Feeling that he’s still not good enough, Yudias asked Yuhi for a special Rush Duel training session. Yuhi used the Special Training Mecha and the Special Training CD to train Yudias. Yudias was able to answer every question, and his training seemed to be going well, but then the Special Training Mecha went out of control…

Atachi Manya, a talented child actress, will be starring in the only show that is popular on Mutsuba Cable TV: “Learning the Fun Way – Ultimate Go Rush!” Yuamu, her childhood friend, was asked to Duel her. The two haven’t seen each other for five years, and Yuamu couldn’t help but be bewildered after seeing how Manya has changed…

Manya’s team is having a Rush Duel battle against a local elementary school team. The opponent Manya picked for the second match is Sogetsu Manabu, who was part of the audience. And the duelist Manabu will be facing is: Manya’s pet dog, Bochi?!

Chupataro barged into Mutsuba Cable TV’s studio and caused a ruckus, demanding a Duel. A concerned Yudias volunteered to take him on. However, the moment Chupataro summoned Magical Sheep Girl Meeeg-chan, his Duel Disk started emitting a strange light…

Manabu asks Yudias if he knows where Zwijo is. It seems that Zwijo is linked to the incident that happened at Mutsuba Cable TV’s studio the other day. Realizing how powerless he is, Yudias decides to train some more. And so, Manya suggests a special training session from hell to him!

Trusting his hunch, Yudias heads to Mutsuba Tower along with his friends, and finally manages to find Zuwijo. Zuwijo is planning to use Rush Duels and the Earthdamar as tools for war. In order to stop his commander, who has gone down the wrong path, Yudias challenges him to a Rush Duel!

Two alien warriors are trying to bring peace to the Velgear Cluster. One is learning about Rush Duels in order to end all conflicts, while the other is trying to weaponize Rush Duels in order to achieve victory over his foes. As their unwavering ideals clash, the battle between Yudias and Zuwijo finally reach a conclusion!

Kirishima London approaches UTS and requests them to look for a missing girl in the Alien Residential Area, located underground. However, Mr. Tazaki doesn’t want Yuhi and his friends to go to such a dangerous area, so he challenges their client, London, to a Duel!

In order to look for Goha Yuna, Yuhi and co. head to the Alien Residential Area. However, just as they begin their search, three siblings who call themselves the Jersey Devils block their path. With the mysterious power known as “Duel Power” at stake, Yudias and the eldest brother George Jersey begin their Duel!

Yuhi and co. heard from George that there’s an informant who knows where Yuna is. Unable to find the informant, they returned to UTS. As Yuhi was taking a bath to relax, the light suddenly turned off. He then heard a creepy chorus…

The informant, Fisher Sky, has appeared. Ever since that incident with Zuwijo, Sky has been very interested in Yudias. Yuamu wants more information on Yuna, so she challenges Sky to a Duel, with information about Yudias as a bargaining chip. A high-level Information Warfare Duel ensues!

Yuhi and co. learned that Yuna might be at Badloon Castle. However, the only people who can enter the castle are Duelists who possess the “macho” rank, which is the highest rank in Dueling. So, in order to become macho Duelists, Yuhi and co. visit a colosseum where ruffians gather, known as the Coruffium. Yuhi’s first battle is against a mysterious prophet known as Nomratdamas.

Yuhi and co. were going to keep Dueling in the Coruffium, but Manabu told them to not come to the Alien Residential Area. Nanahoshi Ranran, the chief of MIK, then showed up out of nowhere and declared that the lawless Alien Residential Area must be sealed off immediately! What action will Manabu take in response to Ranran?

As Yudias and co. try to look for clues about Goha Yuna in the Coruffium, a girl wearing a cloak appears before them. The girl asks them if they have some business with her leader, Rovian. In order to gain more information about Rovian, the master of Badloon Castle, Yudias challenges the girl to a Duel.

Yuhi and co. return to the surface to do some sleuthing about Goha Yuna. However, even though they’re about to start their investigation, Yudias is nowhere to be found. As they investigate the Goha Company, a fragment of Fisher Sky, Navel No. 81, informs them that Yudias is in danger.

Yuhi and Yuamu enter Badloon Castle to rescue Yudias, who has been captured. In order to do that, they face off against Kirishima Rovian, the leader of the Rovian Bandits, in a 2v1 Duel. The Ohdo twins put up a good fight, but now, they must fight the Queen of Badloon Castle at her full strength.

In a town under the underground area, known as “Under-Underground Town,” Yuhi and co. find a tsukemen restaurant in an alley. They see that they can get one free drink, so they go inside the restaurant and enjoy some exquisite tsukemen made by Oomori Menjaburo. However, Menjaburo’s true identity is actually…

Yuhi and co. managed to rescue Yudias. But there’s a problem: he’s been turned into a shirt! Yuhi and co. try various ways to return him back to normal, but end up losing sight of him. As they go look for Yudias once again, they find a card in the park.

Goha Yuna and Rovian unexpectedly show up at UTS’s office. Yuna demands Yuhi and co. to hand their office over. This angers Yuhi greatly, but despite that, Yudias still challenges Rovian to a Duel, with UTS itself at stake. After receiving some encouragement from Yuamu, Yudias begins the Duel, aiming for a new Velgeard at the same time!

Rovian drives Yudias into a corner with her Equip Spells. However, Yudias is still determined to beat Rovian, even though the odds are stacked against him. As Yudias starts enjoying the Duel, a miracle occurs in Mutsuba Town!

Magical Sheep Girl Meeeg-chan’s popularity has tanked because of Chupataro. In order to restore her image, Chupataro decides to make an anime about her. He starts producing the anime with the full cooperation of UTS. However, they immediately run into some very serious production issues…

Mutsuba Asaka is the president of Mutsuba Heavy Machinery, which controls Mutsuba Town. In order to free the Valvelgear, which is being exploited as a power source by Asaka, Yuhi challenges Asaka to a Duel. Yuhi might not have a Duel Disk, but he has reliable allies who will back him up!

At Asaka’s request, Yuhi and Yuamu go to the riverside to look for a complainer. There, they find the complainer, Glatt Ishida, doing rock balancing with Yudias. When the rock pile is knocked over because of vibration, Ishida decides to go complain to Asaka. So, Yudias tries to stop Ishida with a Duel…

UTS’s dinner table is loaded with a mountain of curry breads! It seems that Yuamu, who’s always on the hunt for promotion campaigns, is targeting some plates that can be obtained by collecting the stickers that come with the curry breads. However, when Yuamu brings the stickers to the bakery, she learns that the plates are out of stock. So, she decides to go complain to the manager, but as it turns out…

According to Rovian’s space poems and the prophecy of Camos the hat alien, the Great King of Terror will be attacking soon. Mutsuba Heavy Machinery is holding a meeting to decide on a countermeasure against this threat, but is then contacted by Ranran out of nowhere. In order to decide who will be in charge of combating the Great King of Terror, Ranran and Asaka begin a remote Rush Duel!

As snow dances in the sky, a giant shadow looms over Mutsuba Town… As it turns out, it’s actually the spaceship of the Great King of Terror! Yuhi and co. bravely board the spaceship to confront him, but he then suggests a “Friendship Rush Duel Tournament.” The first match is between the Great King and Rovian! Just how powerful is the Great King of Terror?!

It is now the second match of the Friendship Rush Duel Tournament, hosted by the Great King of Terror from the Arctic Nebula. Manya will be fighting against the space dinosaur, The☆Mokeida Mbembe! Mbembe rambles on about his love for plastic models. However, Manya doesn’t care about plastic models at all. She’ll be fighting against Mbembe with a Cleaning Deck!

The new cards designed by Mutsuba Heavy Machinery to counter the Great King of Terror were never delivered. Nyandestar headed to Mutsuba Heavy Machinery’s office, but the group couldn’t get in touch with her, so they started getting worried. Before they knew it, it was time for the next match of the tournament. Manabu will be Dueling on behalf of Mutsuba Town. Shockingly enough, the one who will Duel Manabu is actually…!

Yuhi and co. managed to capture London, but he then escaped. He left behind a cassette tape for them on the desk. The tape conveys London’s grim resolve. The message on it reads: “By the time you listen to this tape, I’ll definitely be challenging that Great King dude to a Rush Duel for sure. It’s showtime!”

London and others have risked their lives to uncover the truth behind the Great King. It’s about his terrifying power, which not even he is aware of. As part of the plan to seal away the Great King’s power, Yuamu takes part in the Friendship Rush Duel Tournament. However, her opponent, The☆Yeti Yukio, seems to also have another plan in mind…

Zuwijo is posing as the Great King's subordinate in order to infiltrate his ship and obtain his power. He boasts that he will use any means in order to obtain more power. Unable to tolerate Zuwijo's ruthlessness, Yuhi challenges him to a Friendship Rush Duel!

The☆Lugh releases a massive amount of negative energy, which can potentially engulf the whole universe. Goha Yuna and Yudias team up in order to bring The☆Lugh to justice for all the terror he's caused! Thus begins a Tag Rush Duel with the peace of the whole universe on the line!

Something abnormal happens to Yuna during the Duel with The☆Lugh, but she is saved by a boy. He's the same boy who once entrusted Yudias with a Duel Disk and some cards. In order to turn the Duel around, the boy from the future takes over for Yuna and fights alongside Yudias against The ☆ Lugh !

The group decides to take a detour and head to the Pawtner Planet to save Nyandestar’s family. Yuhi wants to do some Rush Duel training along the way, so he creates a makeshift training hall. As everyone gathers at the training hall, it never dawns on them that the training is all about summoning chants!