It seems that when Lum was born, a postal screwup resulted in a witchy friend of the family not getting an invitation to the celebration. The witch put a curse on Lum, that she would never be happy with her True Love.
In the present, a new Amusement Park has been built in Tomobiki, and opening day finds the whole gang sampling its pleasures. At a magic show, however, Ataru gets turned into a large pink hippo-potamus, FOR REAL!
When Lum attempts to track down the magician that transformed her Darling, things start to get very weird, very fast!
(Source: AniDB)
Characters & Voice Actors

Lum
Main
Hirano, Fumi
Japanese
Mendo, Shutaro
Main
Kamiya, Akira
Japanese
Moroboshi, Ataru
Main
Furukawa, Toshio
Japanese
Ruu
Main
Iwata, Mitsuo
Japanese
Akira
Supporting
Futamata, Issei
Japanese
Benten
Supporting
Mita, Yuuko
JapanesePromotion Videos
Recommended for you
Here is Greenwood
OVA
30m
Kure-nai OVA
OVA
29m
Lupin III: The Columbus Files
Special
92m
Macross Dynamite 7
OVA
30m
Mermaid's Scar
OVA
45m
Ninja Hattori-kun
TV
25m
No-Rin
TV
24m
Ghost Slayers Ayashi: Inferno
Special
24m
The Brave of Gold Goldran
TV
24m
Overlord: Ple Ple Pleiades 3
ONA
2m
Precure All Stars GoGo Dream Live!
Special
5m
KADO: The Right Answer
TV
23m
Pupipo!
TV
4m
Sakamoto Desu ga? Special
Special
24m
Touken Ranbu - Hanamaru
TV
24m