The movie revolves around two legendary thieves, Ray Breslin (Sylvester Stallone) and Carter (Liam Neeson), who have a long history of pulling off impossible heists. However, during their latest job, things go wrong, and Breslin finds himself imprisoned in a maximum-security facility known as "The Tomb." The prison is designed by the brilliant architect, Harper (Robert Patrick), who has taken measures to ensure no prisoner can escape.