SM100

(Japanese: 風を断つ稲妻！その名はゼラオラ！！ The Lightning Bolt that Severs the Wind! Its Name is Zeraora!!) is the 100th episode of the, and the 1,039th episode of the Pokémon anime. It first aired in Japan on December 9, 2018.

Plot
wakes up only to find that the house is empty. He soon finds, Professor Burnet and her outside performing yoga on their surfboards. Burnet explains that it has been a while since the pair recharged. Kukui asks Ash to look at the beautiful scenery and consider the idea that it only exists because of a balance between people, nature and Pokémon. Ash throws a pair of back into the sea before joining Kukui and Burnet to meditate. As the group perform some deep breathing exercises, watches on from the shore.

Later, Ash rushes to the Pokémon School because he is eager to have a against. warns Ash that he won't have any energy if he continues running. Tapu Koko suddenly appears, and a few moments pass before Ash asks if it would like to battle him in preparation for his upcoming Poni Island grand trial. Oddly, the Pokémon remains silent and flies into the nearby forest. Following 's insistence, the group follows Tapu Koko deep into the Melemele Island forest. The pursuit ends in a clearing as Tapu Koko officiates the challenge and transforms the area with. Ash happily accepts the conditions and has Pikachu rush towards Tapu Koko with. However, Tapu Koko dodges the attack and retaliates with. Pikachu evades the move and unleashes its. Tapu Koko counters the attack with its own Thunderbolt. As the two Thunderbolts collide into a large mass of electricity, a Tapu Koko in another dimension uses its own attack. The simultaneous attacks result in a rift which soon transports Ash and Pikachu to an unknown place while Rotom and Ash's Bag remain behind.

Ash and Pikachu wake up in a desert landscape with scattered rubble throughout. Ash calls out to Rotom and Tapu Koko and gets no response. He pulls Pikachu's face only to receive a Thunderbolt, and Ash soon realizes that they are not in a dream. Pikachu and Ash soon decide to investigate the rumbling noises nearby and enter a dilapidated building. The pair narrowly avoid being hit by a large piece of debris and soon spot a mysterious large Pokémon,. Ash walks over, hoping to get a closer look. In the process, he accidentally kicks a rock which makes a sound that alerts Guzzlord to the pair's presence. Guzzlord smashes its tail, then turns around and lets out a frightening cry. Ash and Pikachu watch in shock as Guzzlord consumes a large piece of debris, but are soon forced to run as Guzzlord chases them. Ash and Pikachu make their way up onto another level and reach a dead end as Guzzlord smashes its way through to reach them. Ash has Pikachu unleash a Thunderbolt, but to his surprise Guzzlord simply eats the attack. Guzzlord screeches at the pair and es some toxic acid at them. Ash tries to use his Z-Ring, but it doesn’t seem to work. Guzzlord continues to approach Ash and Pikachu, readying its claw hand to grab them.

arrives on the scene just in time and has use  to smack Guzzlord's claw out of the way. Pikachu and Ash look up to see Zeraora as it returns to the ground. Zeraora follows up with, which temporarily paralyzes Guzzlord, thus allowing Ash, Pikachu, Dia and Zeraora to flee. Dia leads everyone down a ventilation pipe, and demands that Ash and Pikachu keep quiet to remain undetected by Guzzlord. The group soon arrives at a safe area, with Zeraora giving the all-clear. Ash formally introduces himself, and his rescuer introduces himself as Dia and his Pokémon as Zeraora. Ash turns his attention to Zeraora and adds that he was impressed by its move, Plasma Fists. Zeraora remains stoic and turns it back on Ash to avoid further questions. Instead Ash notices Zeraora's tail and goes onto grab it, only to receive a warning Thunderbolt in return. Dia demands to know how Ash reached the restricted area. Ash replies that he was simply battling Tapu Koko when he and Pikachu found themselves faced with Guzzlord. Dia adds that Guzzlord is an Ultra Beast.

In a flashback, Dia explains that Guzzlord appeared one day and began to eat everything in sight reducing the once thriving city to the Ultra Ruin of today. An Ultra Beast fighting squad called the Ultra Rangers attempted to fight Guzzlord, but their efforts proved useless. Afterwards the Ultra Rangers and the land's citizens abandoned the area, while only Dia and Zeraora remained. Dia explains that he remained because he still remembers when the area was thriving with people and Pokémon. Ash offers to assist, but Dia says that Ash will just hold him back. Ash explains that he is part of the Ultra Guardians, but Dia says he hasn't heard of them before and dismisses the organization as a child's game. Infuriated by Dia's criticisms, Ash demands a battle to prove himself and Dia despondently agrees to the match.

Dia requests that Ash make the first move. Ash obliges and has Pikachu perform Quick Attack. Zeraora replies with its own Quick Attack. As the two attacks clash a bolt of lightning rises into the sky and neither side seems injured. Pikachu tries an, but the attack is overwhelmed by Zeraora's Close Combat. Ash calls for an, and it ensnares Zeraora. As Pikachu is about to unleash a Thunderbolt, Zeraora es its way out of the web and follows up with Plasma Fists. Despite Ash's warning, Pikachu is unable to leap out of harm's way and is defeated.

Pikachu has since recovered, but Dia demands that Ash return home. Ash concedes and asks how he is supposed to get home. Dia replies that he'll organize the Ultra Rangers to pick Ash up the next day. Ash is surprised and then learns that Dia is a former member of the group. Dia invites Ash over to his base, noting that Guzzlord makes camping outside too dangerous. As the group make their way to the base, Ash and Pikachu's stomachs begin to grumble from hunger. To keep them quiet, Dia throws Ash some emergency rations to feed Pikachu. Soon, the group arrive at Dia's base, but Ash is perplexed by the ruined building's remarkable resemblance to the Pokémon School.

Major events

 * and have another rematch with, but the  is interrupted when Ash and Pikachu are transported to the Ultra Ruin.
 * Ash encounters a.
 * Ash meets a named  and his partner,.

Humans

 * Professor Burnet
 * Ultra Rangers (flashback)
 * Security Guard (flashback)
 * Citizens (flashback)
 * Ultra Rangers (flashback)
 * Security Guard (flashback)
 * Citizens (flashback)

Pokémon
Who's That Pokémon?: (Japan)
 * (Professor Burnet's)
 * ('s)
 * (Ultra Rangers'; flashback)
 * (Ultra Rangers'; Alola Form; flashback)
 * (Ultra Rangers'; flashback)
 * (Ultra Rangers'; flashback)
 * (Ultra Rangers'; flashback)
 * (Trainer's; flashback)
 * (Trainer's; flashback)
 * (Trainer's; flashback)
 * (Trainer's; flashback)
 * (Trainer's; flashback)
 * (debut)
 * (×2)
 * (×3)
 * (×5)
 * (×2)
 * (×2)
 * (Alola Form; ×3)
 * (multiple; flashback)
 * (×5)
 * (×2)
 * (×2)
 * (Alola Form; ×3)
 * (multiple; flashback)
 * (multiple; flashback)

Trivia

 * Poké Problem: A rare Pokémon appears in today's episode. What is it?
 * Host:
 * Choices:, , ,
 * Answer: Zeraora
 * At the beginning of the episode, wears a T-shirt bearing a picture of the.
 * During 's flashbacks, a greatly resembling Ash, with many elements also taken from, is shown.
 * Ash,, and narrate the preview for the next episode.
 * Music from Hoopa and the Clash of Ages is used as background music.

In other languages
Arashi o Tatsu Inazuma! Sono Na wa Zeraora!! EP1043 SL100 SM100 SM編第100話 精灵宝可梦 太阳＆月亮 第100集