Lum & her girlfriends are invited to Neptune by Oyuki. There she shows them her new business venture at a ranch of flying sherbets, birds capable of producing sherbet cones from their beaks. Ran convinces Oyuki to let her borrow one, her goal is to make some quick cash selling sherbets on Earth. Unfortunately, the combination of being overworked and a hot summer day has made the sherbet extremely cranky, even from its refrigerated cage. It breaks from its cage and escapes, but not before attacking Ran and Lum, and trashing Benten's brand-new bike by shooting sherbet cones at it. Now it's up to Ran to retrieve the sherbet before Benten blasts it out of the sky, and more importantly, before Oyuki finds out.
Unfortunately the movie Urusei Yatsura: Raging Sherbet is not yet available on HBO Max.
| Camera | Nobuo Koyama | Director of Photography |
| Sound | Shin Kawabe | Music |
| Directing | Setsuko Shibuichi | Director |
| Writing | Machiko Kondo | Writer |
| Sound | Katsu Hoshi | Music |
| Production | Yoko Matsushita | Producer |
| Sound | Fumitaka Anzai | Music |
| Editing | Kazuo Inoue | Editor |
| Sound | Mickie Yoshino | Music |
| Directing | Kenji Yoshida | Assistant Director |
| Sound | Yasufumi Yoda | Sound Effects Editor |
| Production | Hidenori Taga | Executive Producer |
| Sound | Kôji Nishimura | Music |
| Sound | Kunio Kuwahara | Sound Mixer |
| Sound | Shigeharu Shiba | Sound Director |