Larry, the security guard (remember him from the first film?), must sneak back, this time into the Smithsonian museum, to put a halt to the reanimated Pharaoh Kahmunrah and his allies; Ivan the Terrible, Napoleon Bonaparte and Al Capone. This he does with the help of potential love interest Amelia Earheart and General Custer, amongst others. For those who enjoyed 'Night at the Museum'.