In this musical-comedy, Dean Martin plays an American hotel mogul who becomes smitten with a young Italian woman (Anna Maria Alberghetti) when buying a hotel in Rome. To marry this gal, he has to get her three older sisters married off.

After arriving in Texas to escape a scandal back east, lawyer Sam Houston just wants to hang out his shingle, keep a low profile, and stay out of any political intrigue. However, when President Jackson personally orders him to lead the fight for Texan independence, he overcomes his reluctance to become involved and leads his compatriots to a string of victories over the Mexican army.