After winning his eighth gym badge, Ash and his friends meet Sinnoh region champion, Cynthia at a Bearticone ice cream stand. They go with her to stay at her villa when they find an injured Meloetta on the road.

Ash and friends arrive in Undella town. When they get to Cynthia’s villa they find out Dawn is also staying there. Ash challenges Dawn to a battle but is interrupted by Cilan who wants to battle Dawn first.

Ash and Iris are training for the upcoming tournament when Dawn suggests they should take a break to a nearby, deserted island. She tells them the island has a rare Onix. Everyone decides to go.

Ash and Dawn take a break after a battle when they meet a boy named Chris who is looking for his lost Cubchoo. Ash and his friends haven’t seen it and decide to help him look.

An injured Dragonite sets off an alarm at a power plant after sustaining injuries from a battle with a Hydreigon. Officer Jenny arrives at the villa looking for Cynthia’s but she isn’t there. Officer Jenny tells everyone about a Dragonite that has begun destroying the power plant. Iris doesn’t believe that a Dragon-type Pokémon would do something like that and they all head to the power plant to stop Dragonite.

Ash and his friends arrive in Lacunosa Town for the Junior Cup. The Cup begins with an exhibition match between Cynthia and Caitlyn. Iris and Georgia face off against each other but Iris’ newly caught Dragonite refuses to listen to Iris’ commands.

Ash, Cilan, Iris, Dawn and Trip make it through the first round of the cup. In the second round Iris and Dawn face off against each other. Iris’ Dragonite continues to not listen to her commands. Trip and Cilan face off against each other in the Semi finals.

After beating Cilan, Trip moves onto the finals. The battle between Ash and Iris is under with Ash’s Krokorok against Iris’s Dragonite.

It’s the final battle of the Junior Cup with Trip facing off against Alder. Dawn leaving for the Wallace Cup in Unova. Ash and Dawn have a battle before she leaves.

Ash and his friends accompany a trainer named Cameron to Himalau City for his eighth gym badge. On the way there, Ash and Cameron get separated from Iris and Cilan and make their own way to Himalau City. Once they get there, Cameron challenges Marlon, the gym leader of the Himalau Gym.

Ash and his friends help a nursery worker named Leila, they try to get a Vullaby and Rufflet to stop fighting with each other. Vullaby runs away from the Nursery and Cilan and Leila go look for it.

Ash is training at Cynthia’s Villa when Ridley arrives thinking that ash had taken Meloetta away from him. After apologising for his mistake, Team Rocket arrives to take Meloetta. Ash and Meloetta try to get away from the Villa but they are captured by Giovanni. They are then taken to the undersea ruins.

After Capturing Meloetta, Team Rocket has brought the Undersea Temple to the surface and used her song to obtain the Reveal Glass. Team Rocket now plan on using the Reveal Glass to summon the forces of nature. Tornadus, Thundurus and Landorus to take over the Unova region. Now Ash and his friends have to save Meloetta and put an end to Team Rocket's plan.

Ash and his friends learn that the Unova League will be held in in Vertress City and leave Cynthia's Villa. On the way there they stop for lunch when Oshawott and Tepig get into a fight and Emolga gets knocked away. Iris and the other go to retrieve Emolga when they meet three trainers, Moira, Sher and Minana who insult their Pokemon and walk away. When they get into a nearby town, they learn that the three trainers are part of a performance group. In order for the group to confront the three trainers, they need to disguise themselves as beautiful and elegant trainers.