A man who wanted to set an example to society promises a million dollars to his future daughter if she remains a virgin until she is 28 years old, but a boy is born and the challenge falls on him.

While his investigating some violations, a commissioner of the Province of Buenos Aires looks for the meaning of the task that he carries out.

Abel Amoroso, a cadet in a notary's house and responsible for taking the deposits to the bank, is kidnapped by a gang whose leader, Luis Santanelli, has an incredible physical resemblance to the cadet. The captor adopts the identity of his sosias, elopes with the loot, convinces investigators of his innocence, and marries Abel's girlfriend.