凯琳的全家被一个刚出狱的谋杀犯杀害，她有感于社会的不公正而自愿成为义务警察，建立起自己的死囚基地。从此，凯琳成为正义的化身，把一个个欺骗假释、越狱出来的死囚送上自制的电椅。当一个被冤枉谋杀的死囚逃出来时，凯琳迅速开始了追捕。

Well-intentioned, eternally bumbling Ernest P. Worrell accidentally releases an evil demon from its sacred tomb. As the demon flexes its power and goes on a ruinous rampage, good-guy Ernest tries to step in to save the town from mass destruction. Trouble is, a 200-year-old curse has scared Ernest stupid, and that means hilarity all around! So, kick back and let the laugh-ridden adventures begin.