"Red, White & Royal Blue" is a contemporary romance novel by Casey McQuiston that follows the story of Alex Claremont-Diaz, the First Son of the United States, and Prince Henry of Wales. Their relationship begins with a rivalry but evolves into a secret romance that challenges political norms and personal identities. Set against a backdrop of political intrigue and royal expectations, the novel explores themes of love, friendship, and self-acceptance. As Alex and Henry navigate their feelings, they must also confront the implications of their relationship on their families and the world stage.