Adapted from the Stephen King novella Rita Hayworth and Shawshank Redemption, the film tells the story of Andy Dufresne, a banker who spends nearly two decades in Shawshank State Prison for the murder of his wife and her lover despite his claims of innocence. During his time at the prison, he befriends a fellow inmate, Ellis Boyd "Red" Redding, and finds himself protected by the guards after the warden begins using him in his money laundering operation.