What is Red, White & Royal Blue about?

After a headline-grabbing incident at a royal event, Alex Claremont-Diaz, the First Son of the United States, finds himself in a very public feud with Britain's Prince Henry. To mend international relations, the rivals are forced to stage a fake friendship for the cameras. However, as they spend more time together, their icy relationship thaws, revealing an undeniable connection beneath the surface. This unexpected bond blossoms into a secret romance, forcing them to navigate their feelings amidst their high-profile lives and the potential political ramifications.