Antonio Gramsci, sentenced to twenty years in prison by the fascist courts, relives the stages of his political career and private life: in particular the foundation of the Italian Communist Party, the useless resistance to the right-wing offensive, marriage, arrest, the conflict with Palmiro Togliatti. In prison, the politician is first considered a hero, then shunned because of his unconventional views on Stalin and the authoritarian involution of the USSR. Discharged from prison for health reasons, he died in 1937 in a clinic in Rome.