Somebody is selling songs for two recording companies, simultaneously. The owner of one of them hires a detective to find out the swindler's identity. But the private-eye is clumsy, and messes things up even more.
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.
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 gang, leaded by the unknown and mysterious Anjo, robs a jewelry and schedules a meeting in the Copacabana Palace Hotel, in Copacabana. The identification would be through a cigarette case with an angel, and the password "- Is everything all right?" Meanwhile, the director Ricardo is preparing a show for the carnival in the hotel with Marina, and they love each other. The janitor Serafim receives a letter from his unknown American brother, who will come to Rio to spend the carnival and meet him, and asks Eliana for a chance in the show, since his brother believes he is an artist. When Ricardo finds the cigarette case lost by Anjo in the entrance of the hotel, he is misidentified by the thieves, and this is the beginning of lots of confusion and fun.
A man is looking for a radio singer named "Dulcineia." For this, he goes through the biggest hassles and problems. The plot, in fact, is an excuse for the exhibition of the musical numbers of the greatest Brazilian Radio artists.
