After the first episode, the night guard Larry made a lot of money with the flashlight branded under his own name, and there is no shortage of anything anymore, but he always feels that there is something lost in his heart, and there is a dark shadow that keeps asking for it. Pull him back to the American Museum of Natural History, where his life changed overnight. A big event happened suddenly, where his favorite exhibit, his friend, was considered to be out of fashion, and was packed and ready to be sent to the Smithsonian Museum's warehouse.
Their fate is now unknown, Larry received a miniature cowboy Jedi-Dyer () emergency help phone call informing him that this will be swept disaster. The situation seems to be new people, a threat to their survival, including Pharaoh (), he has been depressed for three thousand years. Now he and the three best-known figures in the history of Ivan the Terrible (), Napoleon () and underworld boss Al Capone (), It is planning to take over the entire museum with the legion that started the underground world, and then the whole world.
Larry immediately left for Washington. He had a few new friends this time, including the smart Einstein, the sincere Lincoln, and the exhibition Emilia Earhart (), they stimulate the curiosity and enthusiasm Larry adventure for. Plus old partner rejoin, including Roosevelt (), Wu Dawei (), Sacagawea () , King Hun () and Neanderthal. Larry must rescue all his friends before dawn, and let the entire museum area of Washington National Mall, including the Lincoln Memorial to the Space Museum , Back to quiet order.