Oota is on the run! After finding out that he's an actual, factual, real human man, President Momo-chan has sent her best and sexiest agents to find and eliminate him. Naomi escapes with Oota to the underwater city, O-Bio, a lesbian safehaven and technological marvel filled with bio-created monster girls and other sublime body modifications. They are on the search for the city's leader, Jura, who's capable of generating the same levels of sextasy as Momo-chan, but the problem is O-Bio is a realman and real man-free zone. How is a guy like Oota gonna control himself around all these bio babes and stay incognito?!