A curse has befallen Biringan. Stalking the night sky and sinking sharp teeth in its prey, a vampire-like creature--a manananggal--is terrorizing the kingdom. Now MJ Robertson-Rodriguez must fulfill her duties as the newly crowned queen and restore peace. Except . . . when MJ wakes up in tattered clothes stained with blood, she quickly realizes the monster lives within her.

To prevent more destruction, MJ flees to Mount Makiling with select members of her court, all while keeping her curse secret. By her side is Lucas, the talented knight who broke her heart by giving his own to another. And there's Prince Qian, the devilishly handsome monster hunter from the Jade Empire who's visiting on a diplomatic mission.

In the mountains, MJ is charmed by Qian's valiant spirit. Could he be the one to finally mend her broken heart, which still beats for Lucas? But as the manananggal fills MJ with bloodthirst, she must set love aside and break the curse before it consumes her forever.

When a neighboring kingdom threatens to wage war on Biringan, can the young queen regain control of herself before she loses control of the crown?