The baron of Santafusca, descended from a noble family, leads a dissipated life. To pay debts he is forced to sell his house. He tries to steal from the house of a very rich priest and, surprised during the theft, he kills the priest, and then throws the body in an abandoned well. He continues his life of revelries and luxury, until the remorse for the crime trigger a process of self-destruction. The nightmares of the baron, tormented by the only evidence left of the murder, the hat of the pries...