On March 21, 1963, the inmates and guards at Alcatraz prison mysteriously disappear. To cover up the problem, the government reported the prison has been closed because of unsafe conditions. A secret government unit was set up to find the prisoners. Now, in the present-day, the inmates begin returning - unaged and unaware of where they have spent the missing decades - and continue their criminal ways. They are acting out of character and appear to be searching for specific objects. A federal agent employs a police officer and a conspiracy theory novelist to help track them down.