As described in a film magazine, looking for adventure, American Truxton King (Gilbert) is visiting the eastern European country of Graustark. He accidentally enters the palace grounds and meets Prince Robin (Moore), who takes a liking to the stranger and shows him around. They meet his Aunt Lorraine (Clifford) who went to school with Truxton's sister. Prince Robin makes the American promise that he will meet him at the fortune teller's hut the next day. Truxton goes there and overhears a plot to assassinate the young heir. Truxton is made a prisoner but later escapes, also freeing Lorraine who was also captured. He returns in time to prevent the attempted assassination. The revolutionist then attacks the castle and Truxton goes for help. They arrive in time to save the Prince. Truxton realizes his love for Lorraine although, because of their different stations in society, he prepares to leave. Lorraine then tells him that she is an American, too, and consents to be his wife.
