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.