Ernesto and Marta, a couple of newlyweds who have serious financial problems, are visited by a neighbor asking them to keep a large sum of money at home until she goes to the bank the next day.
After the execution of the spy Mata-Hari, the secret service takes the opportunity to arrest some of her collaborators. To arrest one of the ringleaders, they use his girlfriend Niní, a naive dancer. The girl, tired of being manipulated by everyone, decides to become agent X25.
Mr Froilán, "Padre Pitillo", is the parish priest from a spanish town. He has a reputation for cantankerous but bellow this appeariance has a kind and humanitarian spirit.
