A traveling party of royals from central Europe arrives in England in 1911, as the host country prepares to celebrate the coronation of a new king. But when the visiting Regent (Laurence Olivier) goes to a musical theater, his attraction to American performer Elsie (Marilyn Monroe) makes it hard to stay focused. Soon, Elsie learns of a potential coup in the Regent’s home country, and it’s up to her to smooth things out — or watch as the nation hurtles toward instability.