Four everyday suburban guys come together as an excuse to escape their humdrum lives one night a week. But when they accidentally discover that their town has become overrun with aliens posing as ordinary suburbanites, they have no choice but to save their neighborhood – and the world – from total extermination.
Hapless museum night watchman Larry Daley must help his living, breathing exhibit friends out of a pickle now that they’ve been transferred to the archives at the Smithsonian Institution. Larry’s (mis)adventures this time include close encounters with Amelia Earhart, Abe Lincoln and Ivan the Terrible.