A murderer terrorizes the city of Buenos Aires by attacking on the streets on rainy days and always leaving a card with the name "S. López". A local boarding house full of eccentrics appears to house a possible suspect.
A married man takes advantage of his friendship with another man, making him pretend to be the father of the children he has out of wedlock.
Noir hero tries to avoid being arrested while he tracks down papers that will prove his innocence.
