For financial reasons an unemployed aspiring actor works for a phone-sex enterprise. One day he receives a call from the mysterious wife of one of his best clients.
Les Visiteurs is about the disappearance of a team of six extraterrestrials coming to study Earth. The Empire of the Four Planets dispatch two police detectives to find them. They slip into two human bodies just as they are about to die, those of a Frenchman Jean-Louis and a German woman Renate, and resuscitate them so as to pursue their mission.
Spain, 1940s. While returning to Madrid by train, Paca, a chorus girl who aspires to join a prestigious company, meets Luis, a young man of helpless appearance.