Nello is a trade unionist who after having written a book on the world of the market is severely attacked by his "comrades"; he was then transferred to Cooperative 180, one of the many that arose after law 180 to accommodate patients discharged from mental hospitals.

Listening to everyone's ideas, in an assembly the decision is made to abandon care work and enter the market by becoming parquet installers: each patient will play a role within the cooperative according to his own characteristics.

On the day of the delivery deadline, the wood ends: so Luca and Gigio, given their artistic ability, decide to use the scraps to make a panel depicting a star and thus cover the entire floor.

Nello loses all hope, convinced that he will end up in prison for the death of Gigio, but any possible accusation against him does not take place, because Del Vecchio admits that he has found unthinkable improvements due to his work.

The boy's suicide was caused in part by everyone, including Del Vecchio himself who did not want to collaborate, so the matter is closed and Nello, after some hesitation, returns to direct the cooperative which gets a large contract in Paris to decorate the stops of the new underground line.