Pokémon The Series: Sun & Moon

A Ghost Pokémon Outbreak! Everybody's Haunted House!! (21x50)

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Suiren's sisters Ho and Sui want to go to a haunted house, but there don't seem to be any in Alola. Acerola and Mimi-tan have come to Melemele Island for a visit, and she suggests, with Principal Okido's approval, that they make one at the Pokémon school. Under Rotom-Dex's guidance, Ho and Sui start exploring the "haunted house" (with all ghostly SFX provided by Satoshi and the gang). Suddenly mysterious things begin happening, and Acerola's Kagebouzu reveals the presence of extremely enthusiastic Ghost Pokémon, possibly drawn by Mimi-tan's presence. Ho and Sui are having too much fun with the Ghost Pokémon to be scared and the Ghost Pokémon want them to stay with them, so everyone is transported into a scary dreamworld created by Mumargi. Now the gang must escape Mumargi's traps before Ho and Sui are whisked away forever; maybe Principal Okido's Nekkoala can help! Meanwhile, waves from a playful Hoeruko causes some crates (inside one of which Eievui is napping) to fall overboard off the ferry; in a panic, Eievui falls into the sea and nearly drowns before being rescued by a Tamanta who gives it a ride.