Anime Feature - 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). Ameria, Zelgadiss, and Xelloss all show up. But now the octopi have enlisted the power of a demon 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.
http://www.theanimenetwork.com/Shows/Slayers-Premium