A psychologist, a psychiatrist and a prison warden open up a long-closed prison, unaware that the ghost of an electrocuted convict haunts it.
After Charles Forsyth was sent to the electric chair for a crime he didn't commit, he forever haunts the prison where he was executed. Flash forward several years when the prison is reopened, under the control of its new warden Eaton Sharpe, a former security guard who framed Charlie. When prisoners are ordered to break down the wall to the execution room, they unknowingly release the angry spirit of Charles Forsyth, a powerful being distributing his murderous rage to all, leading up to the Warden himself.
Bumbling Ernest P. Worrell is assigned to jury duty, where a crooked lawyer notices a resemblance with crime boss Mr. Nash, and arranges a switch. Nash assumes Ernest's job as a bank employee, while Ernest undergoes Nash's sentence to the electric chair. But instead of killing him, the electrocution gives Ernest superhuman powers, enabling him to escape from jail and foil Nash's attempt to rob the bank.
A supernatural tale set on death row in a Southern prison, where gentle giant John Coffey possesses the mysterious power to heal people's ailments. When the cell block's head guard, Paul Edgecomb, recognizes Coffey's miraculous gift, he tries desperately to help stave off the condemned man's execution.