Jeffrey Evans, American ambassador to Mexico is captivatedby the charms of her adopted homeland, Evans' impulsive daughter Christine falls in love with the decidedly mature piano virtuoso Jose Iturbi. Amused by Christine's ardor, Iturbi agrees with Evans that the girl would be far better off with someone closer to her own age-namely, British ambassador's son Stanley Owen .Meanwhile, Christine plays matchmaker between her widowed father and glamorous Hungarian Toni Karpathy .Holiday in Mexico was Jane Powell's first MGM effort, and it is clear that producer Joe Pasternak intended to transform the teenaged soprano into the "new Deanna Durbin", though of course Powell eventually developed her own distinctive style. .