It's 1650, and the Peruvian city of Potosi is under investigation from the King of Spain for producing counterfeit silver coins. Meanwhile, the Grand Inquisitor of New Spain is also investigating, this time into the actions of abbess Mother Maria Santa Hilda, who has allowed an apparent suicide, a young woman who died inside the abbey, to be buried in sacred ground. But Mother Maria does not think this was a suicide, and in her attempt to prove her case find out more than even she suspected.