Sailor Moon S: The Movie, known in Japan as Pretty Soldier Sailor Moon S The Movie (劇場版 美少女戦士セーラームーンＳ, Gekijōban Bishōjo Senshi Sērā Mūn Sūpā) and Sailor Moon S the Movie: Hearts in Ice in the Pioneer English adaptation, is a 1994 Japanese animated film directed by Hiroki Shibata and written by Sukehiro Tomita. It is the second film in the Sailor Moon series. The film is adapted from a side story of the original manga series created by Naoko Takeuchi, The Lover of Princess Kaguya. The storyline is loosely based on "The Snow Queen" fairytale by Hans Christen Andersen.
The film was released on December 4, 1994 in Japan as part of the Winter '94 Toei Anime Fair.
An extraterrestrial entity named Princess Snow Kaguya (プリンセス・スノー・カグヤ, Purinsesu Sunō Kaguya) arrives on Earth in an attempt to freeze it, but a fragment of her comet has been lost and she is unable to proceed without it. She has her henchwomen, the Snow Dancers, search for the missing fragment. In Tokyo, a young astronomer named Kakeru Ōzora (宇宙 翔, Ōzora Kakeru) finds the fragment and keeps it in his observatory to study it further.