Slayers Premium
Japanese title: スレイヤーズぷれみあむ
Alternative titles: Slayers Movie 5
Type: Movie
Source: Light novel
Episodes: 1
Status: Finished Airing
Aired: Dec 22, 2001
Duration: 33 min
Rating: PG-13 - Teens 13 or older
Studios: HAL Film Maker
Producers: Starchild Records, chara-ani.com, GANSIS
Licensors: ADV Films
Genres: Action, Adventure, Comedy, Fantasy

Lina and Gourry travel to a seaside town named Acassi, where octopus tentacle is a delicacy. However, the octopus meat carries a curse that dooms the eater to only speak Takogo (octopus language). Amelia, Zelgadiss, and Xelloss all show up, and the main four characters (Lina, Gourry, Ameria, Zelgadiss) get cursed. The octopi enlist the power of a mazoku to get rid of the humans once and for all. The white sorceress Ruma must learn the cure to the curse from her long-lost master in order to save the town. 

(Source: ANN)