Renato and Gedeon have just opened a nightclub in a disreputable area of New York, triggering the hostility of Gionata, a gang leader and owner of the nightclub across the street. Helped by the hoods of his gang, Gionata uses a couple of tricks to try and ruin his competitors. To begin with, he induces his friend Barbara, a vamp, to perform in a hot number in Renato and Gedeon's joint, so that the police intervene and close the club. The move fails, so Gionata decides to have Renatino, Renato's son, kidnapped by his men, which proves another flop. To make matters worse for Gionata, Michaela, his own daughter, has fallen in love with Renato, and sides with him and his partner...

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