Three months have passed since Exdeth, an albino mermaid, was captured and sold to the Hillsea circus. Forced to sing day after day, she shares the same desire as her companions: to escape that place. To achieve it, they'll need to get close to William, the circus owner's son, through Exdeth herself. But will she be able to meet everyone's expectations and achieve their goal, despite lacking the innate abilities of a typical mermaid?