Now that she has control over her transformations, Takako is happy to be known as the "Octopus Girl"! Being able to change herself into a teenage head with octopus tentacles allows her to discover horrors in the ocean as well as in Japan. Octopus Girl and Sakae (a wicked girl with the body of a moray eel) face satanic cults, pregnancy, death-trap elevators, violent family strife, and their own backbiting rivalry!