Red, White & Royal Blue concerns a rivalry-turned-romance between Alex Claremont-Diaz, the First Son of the United States and Prince Henry, a potential heir to the British throne. As the two young men sort out their relationship and eventually brave public opinion by declaring their feelings openly, the novel explores the themes of honoring one’s true nature, trying to strike a balance between public duty and private desires, and the value of independence and diversity over conformity.