After losing a finger in a work accident, an Italian worker becomes increasingly involved in political and revolutionary groups.

Gian Maria Volonté
as Lulù Massa

Mariangela Melato
as Lidia

Salvo Randone
as Militina

Gino Pernice
as Sindacalista

Luigi Diberti
as Bassi

Mietta Albertini
as Adalgisa

Donato Castellaneta
as Marx

Adriano Amidei Migliano
as Tecnico

Guerrino Crivello
as Cronometrista

Ezio Marano
as Capo Operai