Sailor Moon (1992)

S01E11 Nightmare in Dreamland

Queen Beryl's anger grows as she becomes fed up with Jadeite's constant mistakes. In an attempt to regain favor, he opens a theme park, but the alarming number of vanishings soon catches the attention of the public. Meanwhile, Usagi and Rei, now embodying Sailor Mars, start to develop their fiery yet competitive friendship as they confront the eerie events unfolding at the park.