Natale, an apprentice bricklayer, and Luisa, who has no marketable skill, marry and try to live with Natale's parents and other relatives in one apartment, what might happen in the poorest classes in Rome about 1950. After a quarrel Natale and Luisa precipitately leave without a place to live. The remainder of the film is devoted to their finding housing. The solution is building a one-room brick dwelling as a squat on unused railway land on the outskirts of Rome. As it was illegal, Natale arranges his workmates to assist him during the night. According to the rules, if a dwelling has a door and a roof the householder cannot be evicted. At dawn when the police arrive to remove them the dwelling is complete except for part of the roof, but a humane policeman looks the other way. The happy ending is not without realism. In financial straits, and facing imprisonment later, Natale and Luisa, now pregnant, will encounter difficulties ahead.