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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 — the octopus language. When Amelia, Zelgadis, and Xellos all show up... Lina, Gourry, Amelia, and Zelgadis manage to get cursed. The octopuses enlist the power of a mazoku to get rid of the humans once and for all. And so the white sorceress Ruma must learn the cure to the curse from her long-lost master in order to save the town, and her friends.