""Stop, Luna! Do not go through that door!""
— Queen Serenity in "Invasion: Sailor Venus."

Space-Time Door

Endless space and time




Sailor Pluto (guardian)

First Appearance
  • Invasion: Sailor Venus (flashback)
  • Time Wrap: Sailor Pluto
The gateway to the Fourth Dimension, this door was guarded by Sailor Pluto and for a short time, Diana. It could be accessed from the Moon Palace or Crystal Palace depending on the era or by using a Key of Space-Time obtained or robbed from Sailor Pluto. 

The door was decorated with the phases of the moon in the anime. It first appeared in episode 82 when Sailor Pluto opened the Door to allow Sailor Moon, Tuxedo Mask, the Inner Senshi, and Chibiusa to pass through.

Original Anime Edit

It was shown only in the second saga of the second season when Sailor Moon, Tuxedo Mask, and the four Inner Guardians came with Chibiusa to the reach the thirtieth century. Sailor Pluto suddenly appeared in front of the Door, intending to strike any trespassers. After understanding their mission, she let the Space-Time Door open to give them entry to the future of Crystal Tokyo.

Sailor Moon Crystal Edit

Just like the manga, the Space-Time Door was a similar role between space and time itself.