American fashion model Anne Traymore, swimming off the isle of Majorca, loses a bracelet, which the handsome Manuel del Rio Montoya returns to her. She believes he owns a beautiful yacht called The Swan, but he merely works on it for the wealthy Rene LeClerc.

Segundo López, a mature and very humble man who has arrived in Madrid from Cáceres, his homeland, meets Francisca, with whom he falls in love, and El Chirri, a roguish street urchin with whom he will have adventures all over the huge and hostile city.