The waves were too rough the day that JJ founded himself drowning. Luckily for him, there was a mysterious creature lurking beneath the waters who was looking for a chance to escape. When the girl emerged from the ocean, there were gills on her neck and she had no heartbeat. They thought she was dead. But when she woke up and started talking about pirate ships and mermaids and her extraordinarily long story, the Pogues realize they have something big on their hands. They take her in a develop an elaborate scheme to keep her away from any scientist who would want to carve her open or billionaire who wanted to put her on display. But with an island full of curious people who are more the intrigued by the strange girl that seemed to show up out of the blue, keeping secrets starts to become more difficult.