Villa's regiment demobilizes at the end of the Revolution, but the ruling faction in the provisional government isn't eager to see them reintegrate into civilian society.
Elisa, a seller of a fashion house, sends a model to the wrong address. For fear of being fired she decides to recover it on her own. She encounters Alberto, a guy whose wedding is at noon, going to the same place it. From the moment they meet, they begin to suffer all kinds of mishaps.
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.
After the death of Queen Mercedes, Alfonso XII's first wife, the problem of the succession is raised. The monarchy needs a heir and the King choses María Cristina from Habsburd to be the futur spanish queen. But Mercedes memories will be against the marriage and the long-awaited son will born when Alfonso is already dead.
Father Barrera, a newly ordained priest, returns from Rome to join the national forces as a military chaplain. The horrors of war produce in him a commotion so great that panic dominates him and he is not able to overcome it. After spending some time on the front line, they send him to the rear. There, his superior, Captain Estrada, meets Cristina, a young nurse.
Rosario was unjustly condemned for a robbery committed in the theater where she worked as secretary of producer Gaston Leducq. When she leaves prison, she tries to prove her innocence to Gaston, but things do not happen as she expected.
Paco, a Sevillian living in Paris who works as a music hall singer, receives news of the death of his uncle named him heir to his fortune. The only condition imposed is to pass a test that is to fight in one of the main squares in Spain. If the attempt fails, the estate would pass to her sister full. From here, Paco will have to wake up if he want to show their courage and take part in a bullfight.
A group of robbers assault a factory in the port of Barcelona, but, upon being discovered, they are forced to flee hastily, each one his own way. An exhaustive police device is then initiated with the aim of capturing them. But the police persecution to which the members of the gang are subjected incites distrust between them and, one after another, they will fall, until only two remain.
Once Upon a Time, one of the first animated films made in Spain, is a free adaptation of the story Cinderella by Charles Perrault. It was directed by Cirici Pellicer, pseudonym of Jaime Baguña Gil, and obtained recognition for the best children's film at the Venice Film Festival.