A Czech girl named Petra has been having trouble with her family. Her father and mother both find out that she is promiscuous, and they both think that it is her fault. Her mom thinks that the only way she can get her daughter to stop being promiscuous is to marry an old man and allow him to teach her in the bedroom. It so happens that her dad's business is going bankrupt, and his young son (who is in high school) is out with his friend. And one night, out of boredom, he calls his old friend Braganza to come over..