Pokémon (1997)

S05E18 For Ho-Oh the Bells Toll!

Title: The Bell's Call for Ho-Oh! Plot: While exploring a mysterious sound of ringing bells, our heroes uncover that the legendary Crystal Bells, known to chime only upon the return of the mythical Pokémon Ho-Oh, have vanished! The enigmatic researcher Eusine appears to hold crucial information about their disappearance...