Mild-mannered Paul Blart has always had huge dreams of becoming a State Trooper. Until then, he patrols the local mall as a security guard. With his closely cropped moustache, personal transporter and gung-ho attitude, only Blart seems to take his job seriously. All that changes when a team of thugs raids the mall and takes hostages. Untrained, unarmed and a super-size target, Blart has to become a real cop to save the day.

Security guard Paul Blart is headed to Las Vegas to attend a Security Guard Expo with his teenage daughter Maya before she departs for college. While at the convention, he inadvertently discovers a heist - and it's up to Blart to apprehend the criminals.