A conscientious factory worker becomes embroiled in political activism after accidentally cutting off his finger while working a machine.

Lulù is a very hard worker, so he is loved by the bosses and hated by his own colleagues. The unions decide agitations against the masters. Lulù doesn't agree until he accidentally cuts off one of his own fingers. Now understanding the workers' conditions, he agrees with the unions and participates in the strike. Immediately he is fired; then he's abandoned not only by his colleagues but also by his lover. But the unions' fights allow him to be rehired under a new legislation. At this point his mind starts giving collapse signs.—1felco

A conscientious factory worker gets his finger cut off by a machine. Although the physical handicap is not serious, the accident changes his outlook. When he returns to work, he becomes deeply involved in political and revolutionary groups.—Anonymous

The efficient, productive Lulu Massa is an exemplary, beloved worker for his employers and hated by his coworkers. During a turbulent period in the factory between the union and the radical students against the owners, Lulu accidentally loses one of his fingers. He changes his behavior and joins the movement of the students that wants to stop the factory with a strike as part of the class struggle, while the union wants a partial strike to reclaim benefits to the working class. When Lulu is fired, he gets confused with the new situation. But the union includes his readmission as a subject to be discussed with the owners and he is rehired.—Claudio Carvalho, Rio de Janeiro, Brazil