It is 1971 and Carrolton, Michigan has a rapist on the loose. The sister of one of the victims knows who the rapist is, but cannot prove it. The fact that he is a Catholic priest could protect him from answering for his crimes. Lives are ruined and souls lost before “Sister” Margaret Breiding carries out the plan that brings an end to Father Edward Mueller’s evil acts. In her quest for vigilante style justice, Sister Margaret finds that the vocations of some men and women who serve the Catholic Church are fragile at best.