While performing in a student film, Ataru cuts down Tarozakura, a large, ancient cherry tree. Strange things begin to happen all across Tomobiki: a mountain appears out of nowhere, spring changes to winter, and Lum loses her powers, while those around her act as if she doesn’t exist.
- Other Title: Urusei Yatsura Movie 4: Lum The Forever, うる星やつら ラム・ザ・フォーエバー, Lamu Película 4: Lamu Forever, Urusei Yatsura Film 4: Lum The Forever, Urusei Yatsura Movie 4, うる星やつら4 ラム・ザ・フォーエバー
- Status: Completed
- Sub/Dub: Anime Dub
- Anime Type: Movie
- Genres: Action, Adventure, Comedy, Drama, Romance, Sci-Fi, Harem, Shounen, Animation, Science Fiction, Fantasy, Family
- Characters: Mendou, Shuutarou, Moroboshi, Ataru, Lum
- Score: 6.73
- Rank: 5347
- Popularity: 6758