In the opulent setting of 1911 London, during the coronation festivities for King George V, a vivacious American showgirl named Elsie Marina is unexpectedly thrust into a royal affair. Elsie is invited to a formal dinner at the embassy of the Carpathian Prince Regent, Charles, where she is assumed to be merely a charming companion for the evening. However, Prince Charles, a charming yet pompous man, finds himself captivated by her vivacity and forthright nature. The prince's attempts to woo Elsie lead to an intriguing night filled with cultural clashes and witty repartees. Despite differing backgrounds and protocols, their interactions reveal an underlying tension between formality and spontaneity, setting the stage for comedic misunderstandings and surprising revelations.

Throughout their engagement, Elsie's genuine warmth and unpretentious demeanor contrast sharply with the prince's rigid formality and meticulous adherence to protocol. While navigating the intrigues of the royal household, Elsie unwittingly becomes intertwined in the political and familial tensions surrounding Prince Charles. Her candid wit disarms those around her, leading to unexpected changes within the prince's circle. As the night progresses, Elsie's influence challenges not only the prince's views but also his ambitions and desires, hinting at transformations that could ripple through his governance and personal life. The undeniable chemistry between the unlikely pair unfolds amid secretive plots and shifting loyalties, leaving both grappling with matters of duty versus personal inclination.