Sal Cupertine is a legendary hit man for the Chicago Mafia, able to get in and out of a crime without a trace. Until now, that is. His first-ever mistake forces Sal to botch an assassination, killing three undercover FBI agents in the process. This puts too much heat on Sal, and he knows this botched job will be his death sentence to the Mafia. So he agrees to their radical idea to save his own skin: hide out as a Rabbi in Las Vegas.