An Invasion from Another Dimension: Mystery of Mugen Academy
異次元からの侵略! 無限学園の謎
I Jjigen Kara no Shinryaku! Mugen Gakuen no Nazo
Airing Information
Episode: EP 120, Season 3
Air Date (JP): January 7, 1995
Written by: Megumi Sugihara
Directed by: Kounosuke Uda
Featured Monster: U-Pasokon
North American Dub
Air Date (US): July 21, 2000
CWi Title: Next in Line
Episode Guide
The Messiah of Silence Awakens? Stars of Destiny
A Bewitching Flower That Steals Hearts: Tellu, the Third Witch

"An Invasion from Another Dimension: Mystery of Mugen Academy" is the 31st episode of the 3rd season of the Sailor Moon anime and the 120th episode overall. It aired in Japan on January 7, 1995. The CWi English dub title for this episode is "Next in Line" and it aired in North America on July 21, 2000.


Professor Tomoe and Hotaru disappear from their house, so the Sailor Senshi investigates Mugen Academy, correctly assuming it's connected to the Death Busters. Mimete confronts the Sailor Senshi in desperation over her repeated failures but ends up being killed by Tellu.


International Dub Titles

  • Chinese: 來自異次元的侵略!無限學園之謎 (Láizì yì cìyuán de qīnlüè! Wúxiàn xué yuán zhī mí) ("Aggression from a Different Dimension! The Mystery of Infinity Academy.")
  • European Portuguese: O Mistério da Escola Tecnológica! ("The Mystery of the Technological School!")
  • European Spanish: El misterio del colegio Mugen ("The Mystery of the Mugen school.")
  • French
    • TV: L'école des surdoués ("The Gifted School.")
    • DVD: Invasion depuis une autre dimension ! Le mystère de l'académie Infinie. ("Invasion from Another Dimension! The Mystery of the Infinite Academy.")
  • German: Mimets Ende ("Mimete's End.")
  • Korean: 이차원의 침략! 무한학원의 수수께끼 (ichawon-ui chimlyag! muhanhag-won-ui susukkekki) ("Two-Dimensional Invasion! Mystery of Wuhan Academy.")
  • Latin Spanish: Misterio en la escuela Mugen ("Mystery at the Mugen School.")
  • Polish: Inwazja z innego wymiaru! Tajemnica Akademii Nieskończoności ("Invasion from Another Dimension! The secret of the Mugen Academy.")


Changes from the Manga

Dub Changes

First Appearances



  • This episode marked the last appearance of Mimete.
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