Maria is a young woman who becomes a well-known crook in the bohemian district of Lapa, in Rio de Janeiro. She earns her living with little scams and tricks. Nevertheless, she is good-hearted, and that's why her latest cheat doesn't work at all.
A precious necklace is stolen during a convention at Quitandinha Palace, a hotel in which a wives conference is deciding whether or not unfaithful husbands should receive the death penalty.
A lady, owner of a large area of land where it is believed there are several oil wells, is almost fooled by the president of a pseudo petroleum company into giving up her property for nothing, but is saved by his son's noble intervention.
