 Pedrigo, an innkeeper from Provence, is preparing his inn for the arrival of the Princess of Navarre who ordered her lunch and lodging in advance, but before her arrival comes a rich citizen from Paris, Gianni, who pays him as twice as much and gets hold of the place.To everyone's surprise, when the princess arrives she accepts the situation with good humor - and that's because she recognizes Gianni as King Philip de Valois's son.Finally both princess and prince (after taking off his disguise) fall in love and are prepared to get married.