In 1977 a group of young| horny| out of control Christians are spending a fun filled weekend at the Happy Day Bible Camp. Their impure antics rile up a sadisticcrazy nun known as| "Sister Mary Chopper". One by one these youthful sinners pay a BLOODY penance for their sinful acts. 7 years later| another group of Bible totin'Christian wannabes return to the Happy Day Bible Camp. All ignore the warnings from the local folk of the grizzly murders that took place 7 years prior. Is SisterMary Chopper dead or is she just waiting for backsliding Christians to commit sins of the unholy?