After the untimely death of her beloved husband, King Theos, Luna struggles to find meaning in her life. Beyond her children, there is little joy in her day-to-day. When Luna's friends suggest a trip to the mermaid expo at Crimson Moon Hideaway, however, Luna's not sure she's ready, but her son's sudden interest in her happiness has Luna reevaluating her life.

Having never been on land before, Luna has zero experience on legs and ends up in the lap of a handsome stranger. Literally. He's attentive and attractive and Luna wants nothing to do with him. Still Luna wonders if she can find a way to open her heart to this mysterious merman or if she's better off returning to the ocean even lonelier than before she left?