A publisher of novels begins to receive packets containing macabre: members of a female corpse. The appearance of a mysterious woman who seems related packages will lead to a situation of dramatic denouement.

Martin and Antoine, two French criminals, team up with Román and El Picas, a friend of the latter, to commit robberies in Barcelona, but things do not turn out as expected.

A former convict, named Raul Vela, and a cabaret singer, called Clara, are a couple who tries to lead a normal life. He has found an employment and she wants to leave the cabaret. One day an old chief, who wants to disappear, proposes him to justify his supposed death in a supposed accident. In exchange, Raúl will receive one hundred thousand pesetas as gratification. Raul refuses to engage in the deception. Shortly after, he reads in a newspaper about the death of Cervera, which makes the police relate him to the case.

One day, three young seamstresses who love nightlife and fun, upon returning to the house they share, find a seriously injured girl in the bathroom.