Professor Kukui breaks into a small dance to announce that he has arranged for his students to partake in a Pokémon Dance recital. He explains that anything goes, with the main aim being to showcase a Pokémon's individuality. His students are interested by the prospect, which Kukui explains will occur in three days. Later in Hau'oli City, Team Rocket relishes in their thriving honey-flavored donut van business. Jessie looks forward to a menu expansion and hopes to advertise the business through a singing-dancing commercial, while James notes that the money made will impress the Team Rocket HQ. Team Rocket lowers their heads to hide themselves as Mallow runs past them while chasing after Steenee.
Mallow soon catches up to her Pokémon who has wandered into Anela's stall again. Anela happily greets Steenee and gives her a Pecha Berry. Mallow apologizes and thanks Anela for the gift. Steenee spins around to thank Anela, who informs Mallow that Steenee just communicated in Alola Hula, an ancient Alolan dance. To demonstrate, Anela sends out Dori-chan, her Pa'u Style Oricorio. Mallow and Steenee soon follow Dori-chan's swaying movements, pulling in a crowd. The scene also captures Jessie's attention, and James, reading from his book, adds that a Pa'u Style Oricorio's dance increases its Psychic powers. The crowd claps as Steenee and Dori-chan soon finish their street performance. Mallow is enthusiastic, and plans to have Steenee perform the Alola Hula at the upcoming Pokémon Dance presentation. The pair thanks Anela for sharing the dance with them, and they continue their shopping trip. Team Rocket eavesdrops on the conversation and soon set their sights on stealing the school students' Pokemon during the Pokémon Dance presentation.
At the Pokémon School, the students are in the midst of practice. Kukui commends Lillie's tap routine, and suggests she could add a few moves to the performance. While Lana's water balloon dance with her Popplio is only half-done, Sophocles intends to enter both of his Pokemon and is busy typing something into his computer. Kiawe is accidentally set alight by Marowak's fire twirling, but Popplio's Bubble Beam manages to extinguish the flames. Kukui's attention turns to Ash, who showcases his Pokémon leaping into a totem pole formation. Unfortunately, Torracat collapses under everyone's weight, while Kukui is puzzled by the display. Meanwhile, Mallow and Steenee continue to practice their Alola Hula.
Later at Aina's Kitchen, Mallow's father walks into the kitchen to see Steenee performing the Alola Hula. Mallow explains that it is for her Pokémon Dance project, so Abe offers to take over from the dishes duty to allow his daughter to concentrate. Mallow thanks him, and gives Steenee a cookie as a reward for her hard work. Meanwhile, Team Rocket have broken into the school overnight to set up their plot to steal all of the students' Pokémon.
The day of the Pokémon Dance performances has arrived. Kukui asks if everyone is ready before presenting the group with the master of Alola Hula, none other than Dori-chan and Anela. Ash is surprised to see the fruit market woman, but he and his classmates are impressed by her Alola Hula performance. Kukui thanks her, while she tells the class to put their feelings into their dances. Lillie and Snowy are the first to perform. Snowy starts off by using Powder Snow to make a ring of ice, skating around it while spinning to showcase its elemental Ice typing. To finish off, Snowy performs a backflip to return to its starting position. Lillie curtsies while the crowd applaud the routine. Next is Lana, Popplio, along with her sisters Harper and Sarah. Popplio makes two balloons and the twins rush inside them. Lana has Popplio bounce onto the water balloons, which causes them to burst. Next up, Kiawe and Marowak perform a synchronized fire twirling display, which starts out confidently. However, the pair decide to quicken their paces, and Marowak again ignites Kiawe. Lana has Popplio put out the flames with its Bubble Beam, while Kukui reiterates his earlier fire hazard warning. Sophocles is next, and his Charjabug arrives in its Charjabug racecar. At his command, the vehicle transforms into a robot, with Charjabug as the body and Togedemaru jumping in as the head. The amazing technological display impresses the crowd, but Kukui wonders when the dancing component will begin. Sophocles apologizes and admits that he didn't have the time to program those settings.
Just as Ash is ready to perform, the lights flick off. Two spotlights reappear, one with a Trainer silhouette for the students to stand under and the other with a Poké Ball one for their Pokémon. Thinking it is another guest appearance, everyone, except for Steenee, who is too busy practicing her dancing in the background to notice, follow the voice over's instructions and walk into their respective frames. Team Rocket, dressed in cabaret costume, performs a classical musical number to announce their arrival before ditching their disguises. The students are immediately angered by the trio's presence, but Meowth silences their quarrels. With a press of a button, Kukui, Anela and the students find themselves caged and separated from their now-trapped Pokémon. As Team Rocket's scheme is going off without a hitch, Jessie laughs and looks forward to creating a dancing troupe.
However, their boasts are soon interrupted by Steenee, who goes on to tackle the bars of the Trainers' cage with her sepals. James and Meowth are impressed that their captives managed to find a flaw in their plan, but Jessie scolds them. Meowth clicks another remote button, and the school's basketball hoop is sent out and restrains Steenee. Team Rocket goes back to boasting about their plan, but Meowth inadvertently ends up giving away the fact that the cages are really fragile on the top. Hearing this, Mallow immediately orders Steenee to attack the said weak points. Jessie and James glare at Meowth for his incompetence and send him out to capture Steenee. At Lillie's command, Snowy uses Powder Snow on the floor, sending Meowth sliding into a wall. Steenee unleashes a fury of kicks on the cage's top, which steadily glows and Kukui realizes that she is trying to learn Stomp. In a sparkling pink light, Steenee evolves into a Tsareena. Rotom provides information on the new Pokémon, which notes that Tsareena uses its powerful legs against its enemies. As if to demonstrate this, Meowth is suddenly pinned by Tsareena's leg. At Mallow's command, she performs a Trop Kick, and Meowth is sent flying into a basketball net. Tsareena unleashes several powerful kicks at the cage seals, breaking them and freeing everyone. Team Rocket finds themselves outnumbered, but fortunately for them, Bewear emerges in time to rescue them from defeat.
Everyone congratulates Tsareena on its evolution and Kukui announces that they should all perform Tsareena's Pokémon Dance. With a flick of its hair, Tsareena's Sweet Scent instantly attracts Rowlet. Tsareena smacks Rowlet into the air, followed by a kick. The series of attacks causes Rowlet to gain enough momentum and it performs a "Rowlaunch", which bowls Ash over.