Arriving in Undella Town, Ash and co. were invited by Cynthia and her butler Jervis to stay at her vacation home, along with a Mythical Pokémon: Meloetta in surprise when she turn herself invisible since she likes Ash when it follows them on the seaplane. But she isn't the only old friend from Sinnoh. That's right folks, Dawn from Twinleaf Town in Sinnoh has returned and is introduced to Iris and Cilan and heard words about them from Professor Oak. Apparently she is competing in the World Tournament Junior Cup too, and has seen Elesa back in Nimbasa City during the fashion show to get as much inspiration as she could. Later, she requests to have a battle with Cilan. Will this semi-top Coordinator, Dawn fair against the A-Class Connoisseur, Cilan? And why is Piplup moving in on Oshawott's girlfriend, Meloetta, since she followed all the way here for Ash and introduced to Dawn?
The "Who's that Pokémon?" is Piplup.
This is the last episode Dawn kept Piplup inside his Poké Ball.
During the introduction, Ash's Leavanny didn't appear.
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