Despite being polar opposites—Blanca is fair-skinned, blond and graceful while Roja is dark-skinned and a little wild—the del Cisne sisters are so close they might as well be one person. But thanks to a mysterious family curse, they know their time together is drawing short. As the del Cisne women have accepted for generations, soon the swans will take one of the two sisters for themselves, leaving the other to live as a human. But when two local boys—one who is fleeing a family scandal and the other who is running from parents who can’t understand why he identifies as their son and not as their daughter—become entangled in the del Cisne girls’ fates, the swans’ magic becomes unpredictable, and all four teens have to face difficult truths about themselves and their families in order to survive.