Chapter Summaries

Lucian defeated Xiaoyun’s Greninja with Alakazam, then used Mr. Mime’s barriers and Mega Medicham to counter Hydreigon and Absol. Xiaoyun sent out Kingambit, whose Supreme Overlord Ability empowered it after three teammates had fallen, leaving the battle poised for another clash.

• Lucian’s Alakazam defeated Greninja with a point-blank Thunder Punch after evading and countering Xiaoyun’s attacks.
• Xiaoyun’s Hydreigon unleashed repeated triple attacks, but Lucian’s Mr. Mime blocked them with barriers and defeated Hydreigon with Dazzling Gleam.
• Xiaoyun’s Absol broke through Mr. Mime’s Light Screen with Taunt and Night Slash, prompting Lucian to recall Mr. Mime.
• Lucian Mega Evolved Medicham, which defeated Absol with High Jump Kick and Force Palm before it could Mega Evolve.
• Xiaoyun sent out Kingambit, whose Supreme Overlord Ability activated after three of his Pokémon had fallen.

Xiaoyun defeated Lucian’s final Pokémon with Deoxys, completing a clean sweep of the Sinnoh Elite Four. The host announced that Xiaoyun would challenge Cynthia for the Champion title in three days.

• Medicham’s High Jump Kick failed to overpower Kingambit, and Xiaoyun’s combined Night Slash and Kowtow Cleave knocked Medicham out of Mega Evolution.
• Gallade used Teleport and Sacred Sword to battle Kingambit, but both Pokémon fell after Kingambit unleashed its new One Mist Silver move.
• Mega Metagross defeated Lucian’s Mr. Mime with Planetary Devastation, leaving Bronzong as Lucian’s final Pokémon.
• Xiaoyun summoned Deoxys at Lucian’s request, and Deoxys shifted through its forms to withstand Bronzong’s attacks and defeat it with Psycho Boost.
• The referee declared Xiaoyun the winner, and the host announced his Champion challenge against Cynthia in three days.

Xiaoyun questioned whether he could shoulder the responsibility of becoming Champion, and Cynthia encouraged him to challenge her at his strongest. The championship battle began before a packed stadium, where Milotic reflected Luxray’s Thunder back at it with Mirror Coat.

• Xiaoyun and Cynthia discussed the Champion’s responsibilities, and Cynthia told him she believed he was qualified to take over.
• Cynthia asked Xiaoyun not to hold back in their battle and requested that he approve her leave to visit the ruins in Celestic Town if he became Champion.
• Xiaoyun’s family and friends wished him luck before he entered the stadium for the six-on-six championship battle against Cynthia.
• Cynthia sent out Milotic, and Xiaoyun chose Luxray, whose Intimidate lowered Milotic’s Attack.
• Xiaoyun ordered Luxray to use Thunder, but Milotic used Mirror Coat and returned the strike at twice its power.

Xiaoyun’s Luxray lost to Cynthia’s Milotic after Cynthia countered its powerful Thundering Might and finished it with Hydro Vortex. Xiaoyun sent out Garchomp, whose Dragon Dance surprised Cynthia and gave him a promising start to the next battle.

• Luxray used Thundering Might, but Cynthia’s Milotic combined Surf and Twister to form a waterspout that dispersed the lightning and protected it.
• Cynthia’s Milotic defeated Luxray with Hydro Vortex, leaving Xiaoyun’s first Pokémon unable to battle.
• Barry started to tease Xiaoyun, but Dawn warned him to stop, and Barry quickly pretended he had wanted Xiaoyun to win.
• Xiaoyun sent out Garchomp, and Cynthia recognized it as the Pokémon from the Lily of the Valley Conference.
• Xiaoyun ordered Garchomp to use Dragon Dance, startling Cynthia because her own Garchomp did not know the move.

Xiaoyun and Cynthia’s battle continued with Garchomp and Roserade knocking each other out, followed by a dramatic double knockout between Mismagius and Cynthia’s Spiritomb. The battle remained unresolved as both Trainers prepared to choose their next Pokémon.

• Cynthia switched Milotic for Roserade, whose attacks poisoned Garchomp and trapped it in venomous quicksand.
• Garchomp used Dragon Rush with Sand Tomb to form a giant sand dragon, and its clash with Roserade’s Energy Ball left both Pokémon unable to battle.
• Cynthia sent out her composed Spiritomb, and Xiaoyun chose Mismagius, which tried and failed to put Spiritomb to sleep.
• Mismagius and Spiritomb traded Ghost-type attacks until Spiritomb struck Mismagius at close range and angered it.
• Mismagius unleashed Dark Void, engulfing both Pokémon; the referee declared them both unable to battle.

Xiaoyun sent Aerodactyl against Cynthia’s Togekiss, and Aerodactyl provoked it into abandoning its composure. Aerodactyl’s Bond Form and Energy Cannon defeated Togekiss, leaving Cynthia stunned as she prepared to choose her next Pokémon.

• Cynthia sent out Togekiss as her fourth Pokémon, and Xiaoyun chose Aerodactyl to face it.
• Aerodactyl insulted Togekiss until the normally gentle Pokémon lost its temper and attacked without waiting for Cynthia’s command.
• Togekiss unleashed a barrage of moves, and one Aura Sphere struck Aerodactyl.
• Cynthia ordered Togekiss to use Sky Attack, but Xiaoyun activated Aerodactyl’s Bond Form and commanded Energy Cannon.
• Togekiss and Aerodactyl collided in a massive explosion, and Togekiss fell, unable to battle.
• Cynthia was stunned by the loss and felt she had barely taken part in the round.

Xiaoyun’s Lucario defeated Cynthia’s Lucario with the Aura-powered Fist of Heaven after showcasing its exceptional Aura control and Bond Phenomenon. Cynthia sent Milotic back into battle, leaving Xiaoyun to face her final Pokémon.

• Xiaoyun recalled his tired Aerodactyl and sent out Lucario to face Cynthia’s Lucario.
• Xiaoyun’s Lucario used Aura to defend, countered Cynthia’s attacks with precise technique, and struck with Aura Fist.
• Xiaoyun activated Bond Phenomenon, transforming Lucario into Bond Lucario.
• Xiaoyun ordered Fist of Heaven, and Bond Lucario knocked out Cynthia’s Lucario with a strike of concentrated Aura.
• Cynthia sent Milotic back onto the field, recovered to about eighty percent of its strength.

Lucario defeated Cynthia’s Milotic, leaving Cynthia with only Garchomp against Xiaoyun’s two remaining Pokémon. Garchomp and Sceptile resumed their rivalry from three years earlier, revealed their new final forms, and began a high-speed battle whose outcome remained undecided.

• Lucario overcame Milotic’s Recover strategy with a Big Ball Aura Sphere and won its second consecutive battle, while Xiaoyun still had two Pokémon and Cynthia had one.
• Cynthia sent out Garchomp, and Xiaoyun answered with Sceptile, renewing their rivalry from the decisive battle three years earlier.
• Sceptile dodged Garchomp’s attacks and shattered its Dragon Rush with Amakakeru Ryū no Hirameki, surprising Cynthia with its growth.
• Cynthia Mega Evolved Garchomp into its speed-focused Z Form, and Xiaoyun activated Sceptile’s Bond Phenomenon.
• Mega Garchomp and Bond Sceptile clashed at extreme speed, leaving the spectators unable to follow their movements.

Hanyu Yun defeated Cynthia's Garchomp with Sceptile's Divine Departure and became Sinnoh's new Champion. After receiving his medal and trophy, he discovered Cynthia and the Elite Four were eager to leave their duties to him.

• Sceptile used Divine Departure to defeat Cynthia's Garchomp, and the announcer declared Hanyu Yun the new Sinnoh Champion.
• Cynthia handed Hanyu Yun her Champion's cape, and they shook hands for a historic photograph as the crowd celebrated.
• Hanyu Yun's family and friends celebrated his victory, while Paul decided to train harder and Kenny felt overwhelmed by the gap between them.
• Daniel presented Hanyu Yun with the Champion's medal and trophy, and Hanyu Yun vowed to protect Sinnoh and lead its Trainers toward a brighter future.
• At the celebratory banquet, Cynthia and the Elite Four asked Hanyu Yun to approve their leave, then Cynthia slipped away and left him to manage the requests.

Champion Xiaoyun struggled under the Sinnoh League’s paperwork until he forced the Elite Four to return to work, then relied on Paul’s efficiency to ease his burden. Paul assigned Xiaoyun to attend the Grand Festival finals, where he planned to support Dawn, and Xiaoyun escaped Paul’s offer to spar until he returned.

• Xiaoyun complained that the Champion’s workload had overwhelmed him while Lucian, Flint, and Aaron were away from their posts.
• Xiaoyun threatened to resign in a group chat, prompting Lucian, Flint, and Aaron to return and resume their duties.
• Cynthia recruited Paul to replace Bertha, and Paul became the new Ground-type Elite Four member after defeating her Hippowdon.
• Paul efficiently prepared paperwork for Xiaoyun to approve and assigned him to oversee the Grand Festival finals because Dawn had reached them.
• Xiaoyun accepted the assignment to cheer for Dawn and fled when Paul agreed to spar with him after his return.

Xiaoyun arrived at the Sinnoh Grand Festival in a helicopter and watched Dawn and Zoey advance to the top sixteen. After lunch with them, Zoey left the couple alone, and Xiaoyun took Dawn’s hand to invite her for a walk by Lake Valor.

• Xiaoyun left the Pokémon League office for Lake Valor and warned Aaron that Paul might want to spar at noon.
• Xiaoyun made a grand entrance at the Grand Festival, greeted the judges, and took his seat to watch the preliminaries.
• Dawn performed with Piplup and Lopunny, while Zoey performed with Absol and Glameow; both earned high scores and advanced, with Dawn first and Zoey second.
• Xiaoyun visited Dawn and Zoey during the break and invited them to a lakeside restaurant for a meal.
• Zoey left after teasing Xiaoyun and Dawn, and Xiaoyun took Dawn’s hand and suggested they walk around Lake Valor.

After Dawn’s Grand Festival performance, Xiaoyun and Dawn shared a romantic walk by Lake Valor, but Uxie and Mew interrupted them. Xiaoyun escaped with Dawn to a private villa, where they kissed and promised to stay together.

• Dawn thanked Xiaoyun for supporting her at the Grand Festival, and the two exchanged affectionate words during their lakeside walk.
• Uxie emerged from Lake Valor and recognized the Power of Overcoming in Xiaoyun’s hand.
• Xiaoyun opened a passage to the Tree of Beginning, and Mew flew out and enthusiastically questioned Uxie.
• Mewtwo invited Xiaoyun to fight, but Xiaoyun refused because he was on a date with Dawn.
• Xiaoyun left Mew and Uxie to enter the passage together, then led Dawn to a private villa near Lake Valor.
• Xiaoyun and Dawn kissed, embraced, and promised to stay together.

Dawn defeated Zoey in the Sinnoh Grand Festival final and claimed the Top Coordinator title, then celebrated with Xiaoyun and her Pokémon. At the Tree of Beginning, Mew sleep-talked another question to Uxie, who tried to go back to sleep.

• Dawn and Zoey faced off in the Sinnoh Grand Festival final, with Dawn using Piplup and Lopunny against Zoey's Absol and Glameow.
• Dawn's coordinated attacks put Zoey far behind on appeal points, but Zoey's Pokémon stayed in the match until the final minute.
• Zoey combined Absol's Night Slash with Glameow's Thunder to create Thunder-Severing Scythe, and Dawn responded by Mega Evolving Lopunny and defeating both opponents with a boosted High Jump Kick.
• Dawn won the final and received the Top Coordinator trophy from Xiaoyun, while Zoey congratulated her.
• At the Tree of Beginning, Mew sleep-talked a question to Uxie, who woke up and closed its eyes again.

After returning to Pokémon League headquarters with Dawn, Xiaoyun was assigned to help Alola deal with Ultra Beasts and eagerly accepted when he learned the trip had no time limit. The mission involved rescuing Aether Foundation president Lusamine, who had been abducted by Nihilego, and Xiaoyun prepared to leave with Dawn for Alola.

• Xiaoyun brought Dawn back to Lily of the Valley Island after she won the Sinnoh Grand Festival, and Paul congratulated her before asking Xiaoyun to sign League documents.
• Paul told Xiaoyun that Professor Kukui had requested help in Alola because Ultra Beasts had appeared there, and Xiaoyun tried to assign the mission to Lucian instead.
• Paul explained that the mission had no time limit and that Xiaoyun could use the rest of his time as he pleased, so Xiaoyun enthusiastically agreed to go.
• Xiaoyun read that Lusamine had been abducted by Nihilego and that Kukui was organizing a rescue team with Ash and Serena.
• Xiaoyun told Dawn to get ready because they were heading to Alola.

Xiaoyun and Dawn arrived at the Altar of the Sunne and learned that Solgaleo had already taken a rescue team into the Ultra Wormhole to find President Lusamine. Xiaoyun summoned Mewtwo, which forcibly opened the wormhole and carried them inside, leaving Kukui and Burnet to wait.

• Xiaoyun and Dawn arrived on Poni Island, and Kukui explained that Solgaleo had taken the rescue team into the Ultra Wormhole.
• Xiaoyun opened a passage to the Tree of Beginning and sent Mew back to fetch Mewtwo.
• Mewtwo transformed into Mega Mewtwo Y and used Confusion to tear open the Ultra Wormhole.
• Mewtwo carried Xiaoyun and Dawn through the opening into the Ultra Wormhole.
• Kukui and Burnet stayed at the altar to wait, while Team Rocket watched from behind a stone pillar.

Ash and the Alola Rescue Team struggled against Nihilego controlling Lusamine and her Pokémon until Xiaoyun arrived with Mewtwo. Mewtwo overwhelmed the Nihilego swarm, leaving the battle raging as Gladion watched in awe.

• Ash, Serena, Lillie, Gladion, and their allies fought dozens of Nihilego while Solgaleo battled the giant Nihilego controlling Lusamine.
• Xiaoyun and Dawn arrived with Mewtwo, and Xiaoyun told the rescue team to leave the most dangerous fight to him.
• The team retreated and left Xiaoyun facing the Nihilego swarm, while Gladion remained uneasy about abandoning him.
• Mewtwo defeated one Nihilego with Psychic in a single strike, stunning Gladion and the Alola team.
• Dozens of Nihilego attacked Mewtwo, who countered with Psystrike, shifted into Mega Mewtwo X form, and charged into the swarm.

Xiaoyun and the rescue squad defeated Lusamine’s Pokémon and freed her from the Nihilego leader, then escaped Ultra Space. They returned to Alola to rest and eat malasadas while Mewtwo and Mew went their separate ways.

• Xiaoyun’s Bond Sceptile attacked the Nihilego fused with Lusamine, and the rescue squad joined the battle against Lusamine’s Pokémon to protect her.
• Dawn’s Mega Diancie defeated Milotic, while Kiawe, Gladion, Serena, Mallow, and Ash defeated the other controlled Pokémon.
• Sceptile weakened the Nihilego leader, and Mewtwo used Psychic to tear it away from Lusamine; Diancie caught Lusamine as she fell.
• Lillie and Gladion confirmed Lusamine was alive, and Solgaleo carried the group out of the Ultra Wormhole to the Altar of the Sunne.
• Kukui invited the rescued group to the school, where Xiaoyun eagerly accepted the offer of malasadas; Paul read Xiaoyun’s brief mission report in Sinnoh.
• Mewtwo returned to the Tree of Beginning, where Mew complained that he had been forced to stay behind and Uxie silently judged him.

After establishing the Ultra Guardians, Lusamine let Xiaoyun enjoy a vacation with Dawn on Melemele Island. Hala gave Xiaoyun a Fighting-type Z-Crystal, then accepted his challenge to a friendly battle and sent out Hariyama.

• Lusamine formed the Ultra Guardians to capture and return Ultra Beasts while protecting Alola, but Xiaoyun declined a role and continued his vacation with Dawn.
• Hau repeatedly challenged Xiaoyun’s Sirfetch’d for training, and Sirfetch’d defeated his Dartrix again.
• Hala thanked Xiaoyun for helping Hau and exchanged pleasantries with him on the beach.
• Xiaoyun asked about obtaining a Fighting-type Z-Crystal, and Hala gave him one as a token of thanks.
• Hau suggested a friendly battle between Hala and Xiaoyun, and Xiaoyun agreed.
• Hala chose Hariyama as his partner for their one-on-one battle.

Buzzwole crashed onto the beach and overwhelmed Hala’s Hariyama, then defeated the Ultra Guardians’ first challengers. Shaymin healed the injured Pokémon, while Buzzwole remained a threat on the beach.

• Buzzwole burst from the coconut grove, and Xiaoyun’s Rotom Pokédex identified it as the Ultra Beast UB-02 Absorption.
• Hala sent Hariyama to fight Buzzwole, but Buzzwole matched its strength, threw it with Seismic Toss, and drained it until it became skeletal.
• Ash and his companions arrived as the Ultra Guardians, but Kiawe was knocked unconscious by his own rebounding Beast Ball and Rowlet fled back into its Poké Ball.
• Mallow led the girls’ Pokémon against Buzzwole, but Primarina, Tsareena, Vikavolt, and Pangoro were defeated, with Pangoro drained of its strength.
• Xiaoyun called out Shaymin, which used Aromatherapy to restore Hariyama and the other injured Pokémon.

Xiaoyun sent Infernape to battle Buzzwole, which had challenged him and Dawn after defeating the other Pokémon on the beach. Infernape overwhelmed and captured Buzzwole, while Hau still agreed to challenge Xiaoyun afterward.

• Buzzwole challenged Xiaoyun and Dawn to a two-on-one fight, and Xiaoyun chose Infernape to battle it.
• Shaymin healed Buzzwole, restoring it to full strength before the fight began.
• Infernape activated Blaze and traded powerful attacks with Buzzwole, while Bewear appeared and watched from nearby.
• Xiaoyun ordered Infernape to combine Flare Blitz and Blaze Kick into a devastating attack that knocked Buzzwole unconscious.
• Xiaoyun caught Buzzwole with a Great Ball, and Hau still agreed to challenge him despite seeing Infernape's strength.
• Bewear yawned and wandered away after the battle ended.