Pokémon The Series: Sun & Moon

Dewpider Ascending! (21x27)

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A school of Dewpider on Melemele Island have set out from their nesting pool on a journey to find new homes, but one of them can't keep up with the others and is left behind. Wandering about the forest on its own, it gets into some scary situations until it reaches the beach, but it finds the ocean a very scary place too. Wandering along the beach, it comes across Lana and Popplio with Ash, Pikachu, Poipole, and Rotom, and because Lana is wearing one of Popplio's bubbles around her head (resembling the water bubble Dewpider uses to exist on dry land), it falls in love with her! When Poipole accidentally bursts Dewpider's bubble, Lana dives into the ocean with it to save it. When it follows her back onto dry land, she brings it to the Pokémon school to show everybody. When she pops her own bubble, Dewpider doesn't recognize her, becomes scared and runs away. Everyone wants to help, but Lana and Professor Kukui agree that Dewpider has to find a new home on its own, so they all follow and observe Dewpider. After some mishaps, it finally finds a pond it likes, but runs into an Surskit that already lives there, and the two battle. During the battle, Surskit evolves into an Masquerain and flies happily away, leaving the pond to Dewpider as its new home.