On her wedding day, Lottie is abandoned by her fiancé in front of everyone. In a fit of impulse, she marries Lucien—a beggar perceived to have an "intellectual disability." She brings this "useless" husband home and shields him at every turn, unaware that he is, in fact, the missing Prince of Monaco. As they spend time together, Lottie finds herself falling in love with Lucien, while he, in turn, is deeply moved by her integrity and kindness.