Budding opera singer Dallas Jones and her aunt, Eula, are touring Spain when they are involved in a car crash. When dashing, mysterious Rick Santana appears with offers of help, Dallas is instantly suspicious. With nowhere else to turn, she allows him to escort her to his luxury hotel, steeling herself against his Latin charms. As if one alluring Spaniard weren"t enough, Dallas meets Maestro Miguel Rivera, the brilliant director of the Opera Company of Seville. To her surprise and delight, Miguel offers her a plum role in Don Giovanni. While rehearsing with the company, Dallas discovers that a thief has been stealing jewels from the opera"s prima donna, Estela, who also has her eyes on Rick. Could this be the same thief who"s robbed Rick"s hotel? How will Dallas solve the mystery while withstanding Rick"s relentless pursuit and Estela"s haughty jealousy? Her Spanish serenade turns out to be the most complicated song she"s ever sung!