It is late in the evening and the young girl's parents are still awake. They are waiting for their daughter to return, as she is late. To pass the time, they discuss the book that the mother has just finished reading. It was a detective story about a kidnapping, with a large ransom demanded. Eventually, the discussion escalates into an argument about what they would do in such a situation. The father argued that paying such a sum would be pure madness. At that moment, however, their daughter quietly returns home and secretly listens to the whole debate. She is very upset by her parents' attitude, so she decides to test them. With her boyfriend, she stages a fake kidnapping and calls to demand a ransom...