"Eternal Christmas" is the Christmas episode of YTV's original animated series Martin Mystery, produced and aired as the tenth episode of its first season.
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Martin and Diana find themselves in a snow-globe world. They discover that a lonely man desiring a perfect, eternal Christmas, broke a magic snow globe, causing its contents to be released and come to life. Martin and Diana, with the help of Billy and Java must force the contents back into the globe before they become trapped forever.