Once again you hear the calling to become a Monster Girl Master! And that's you received a call on your phone in the middle of the night. You enter the lab and notice a live mermaid, in the flesh, ruining your childhood doubts about meeting up with a mermaid princess. The Mermaid looks at you with thirsty eagerness. Either that, or she's dehydrated. Better safe than sorry, you rush to take her to the Ocean.