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An Invasion from Another Dimension: Mystery of Mugen Academy
Sailor moon s episode 120
異次元からの侵略! 無限学園の謎
Ijigen Kara no Shinryaku! Mugen Gakuen no Nazo

Invasion from an Alternate Dimension! The Mystery of Infinity Academy


3, Sailor Moon S

Air date

January 7, 1995


Megumi Sugihara


Kounosuke Uda




The Messiah of Silence Awakens? Stars of Destiny


A Bewitching Flower That Steals Hearts: Tellu, the Third Witch


“Next in Line”

Air date

July 21, 2000


Upasocon (CWi)
U-Pasokon (Viz Media)


Goodness Eclipsed (CWi)
The Messiah of Silence Awakens? Stars of Destiny (Viz Media)


Friendly Ferns (CWi)
A Bewitching Flower That Steals Hearts: Tellu, the Third Witch (Viz Media)

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


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


Other Dub Title

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


Changes From the Manga

Dub Changes

First Appearances


  • This episode marked the last appearance of Mimete.


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