Ep. 37: The New Old Gang of Mine!

37

After Goh's Exeggcute is evolved into an Exeggutor, Ash tells him about Alolan Exeggutor and Goh becomes fired up with the idea of catching one. Ash and Goh travel to the Alola region where Ash is reunited with his Alolan Pokémon and his old friends, Pokémon, and his mentor Professor Kukui (as well the new addition to the Kukui family). At the party Ash's friends are throwing for him, Kiawe challenges Goh to a battle to see if Goh is a fitting rival for Ash. It is Goh's Raboot against Kiawe's Turtonator in a battle in which Goh is introduced to Z-moves, with a surprise ending! (Source: Wikipedia)