The strange disappearance of the dogs of his neighbors leads Juan to investigate the case on his own. It ends up finding out that the author of the robberies is a young woman called Eloísa, the cocky daughter of a scientist who uses dogs to create an antidote against sleep. Juan and Eloísa fall in love, but he will ask her to leave her luxurious mansion to live only with his salary.

Following meetings between Spain and the United States a delegation of a mining company arrives to Granada in search of uranium. The company contacted with the landowners, who agree to sell less of them. Such owner refuses because his ground a treasure supposedly hidden Muslim and refuses to sell them to Margaret, representative of the company. When he refused, Margaret convinces the owner to locate the treasure on your own and sell it in case you find it ... but love gets in his plans.