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…