Los desafíos presents three separate stories that are linked by an American presence in Spain in the 1960s, with Dean Selmier playing the role of the American male in all three.
Dean Selmier
as Bill/Allan/Charley
Francisco Rabal
as Carlos
Daisy Granados
as Floricita
Asunción Balaguer
as Fernanda
Teresa Rabal
as Cuqui
Alfredo Mayo
as Germán
Julia Gutiérrez Caba
as Lola
Barbara Deist
as Bonnie
Fernando Sánchez Polack
as Benito
