Prince Franco is a vampire who feeds on emotions, heir to the kingdom of Lunaria and the dream of every debutante. With the exception of Amber. The girl is eager to break the deal, according to the terms of which she cannot leave her house until her nineteenth birthday. Amber did not have the best impressions from a chance meeting with Prince Franco. But when she gets the chance to escape from her treacherous stepmother, Amber will be ready to pay any price. To look like a worthy heir, Prince Franco is obliged to get married. At the Dark Moon masquerade, he must use cunning to delay the choice of a bride. However, what could be better than an alliance with a desperate girl who ran away from home? Now Amber must fulfill her role until exactly midnight: not only accompany the prince, but also try not to fall in love with him. When the masks fall and the spell wears off, will Amber and Franco be able to keep their love? Or will the game of lying be stronger than feelings?