In a small village, Miku Hatsune grew up scared of "Demon Prince" tales. But the Demon Prince is real – Prince Kaito, a man cursed with a monster's form for breaking the fairy Luka's heart. When fate leads to Miku spending all winter at his castle, he and his ghostly knight Gakupo think they might have a chance to end the curse for good! But can shallow Miku come to love a beast?

She thought they could be together forever. Literally. But when the still innocent Frankie is crushed to learn that this isn't an option for her and her dual-natured boyfriend, she seeks advice from her beast undead ghoulfriend to know for sure if love can outlive a normie's death.

No one ever said a relationship with the descendant of Jekyll and Hyde was going to be easy. Now Holt has caused a tragedy, Jackson must take the fall with him and Frankie must fight back against the odds if she hopes for any sort of future with them. But how far can her forgiveness and confidence be pushed before she breaks? And is it worth Holt receiving the ultimate punishment?

A dream Scaribbean vacation turns nightmarish when a shipwreck leaves Frankie, Clawdeen, Heath, Jackson, Clawd and Abbey stranded on a deserted island. With their friends determined to come to their rescue, natural and supernatural elements come into play to put the bonds between them all to the ultimate test in a race against time to save the castaways before it's too late.

For months, Frankie hasn't thought of Jackson and Holt as anything more than friends. Until the nightmares started. Nightmares that seem freakishly prophetic. As she tries to piece together the mystery that ties into Jackson's tragic ancestry, Frankie begins to question if leaving Jekyll and Hyde to fend for themselves was really the right decision.