Don Jose is a good family man and a model employee. He lives in his house as a King with his wife and children who make him happy. His only enemy is Dona Rosa, her mother, who has the habit of saying the last word on everything.

Carlos a young man who lives in the suburbs of the big city has ambitions and wants to change his life. Influenced by friends of doubtful moral character, habituated to frequent harmful environments. Little by little, he begins to see himself doomed to crime and one day he abandons his girlfriend, María, for Isabel, an attractive and intelligent woman who plays with him and takes him wherever he wants. When Carlos, once he has committed a robbery, realizes the nature of Isabel and his friends, and that he will never be happy in that environment, he tries to go back, but the violence of the facts will lead him to a bloodthirsty outcome.

Andras Pulac, a young pianist, refuses to perform a concert in honor of a senior Soviet leader, as a sign of rebellion against the 1956 invasion of Hungary. His refusal, although he does not know it, harms the organizers of a demonstration against the communist cruelty, since his concert had been chosen like slogan. When Pulac finds out, he agrees to give the concert. Andras and Maria Kondor, the daughter of a communist journalist, are in love and decide to get married before the concert. Meanwhile, communist repression in the streets provokes the anger of the Hungarian people and gives rise to a real revolution.

One day, without knowing how or why, the birds of a big city leave, disappear. It is believed to be a protest against environmental pollution. Some children (the Regaliz group), then embark on an ecological campaign to get the birds to return to the city.