Traveling dentist O'Connell traverses South America on his motorcycle for the 'Eversmile' foundation of New Jersey, in a fight not only against cavities, but also against fear, ignorance, indifference - and established antediluvian dentists. During a stop at a lonesome garage he meets Estella, who is supposed to marry a few days later. However she'd rather come with him - to meet a former boyfriend in another town, she says. Expecting problems, he refuses to take her, but she tricks him into it and then tries hard to convince him of her qualities and let her stay with him.

Daniel Day-Lewis
as Dr. Fergus O'Connell

Mirjana Joković
as Estela

Gabriela Acher
as Celeste

Julio De Grazia
as Dr. Ulises

Ignacio Quirós
as The 'Boss'

Ana María Giunta
as Lady in Small Town

Boy Olmi
as Radio Announcer

Eduardo D'Angelo
as Manager

Alberto Benegas
as Sheriff

Roberto Catarineu
as López