The well off daughter of a tenor breaks up a romance with a helpful youth from a misunderstanding. But she continues to cover him with his gambling debts despite her delicate health.
Mastro Agostino Miciacio, zapatero, portero y devoto de San Juan degollado, trata de averiguar quien ha estado robando el aceite que mantiene las velas encendidas al santo. Por otro lado, no aprueba al novio de su hija y se opone a su matrimonio.
