Hannah is a princess from long ago in Ireland. She is shipped to the museum in New York, where she realizes that the museum exhibits come to life.
Not only that, but the Egyptian pharaoh, Ahkmenrah, has stolen her heart.
After barely escaping being kidnapped by a man in a strange outfit, Crystal stumbles into the Museum of Natural History in New York. She meets Larry Daley and his son Nicky. Just when she thinks her day can't get any weirder, the minute the exhibits come to life, something strange happens to her. And she doesn't know if she can stop it from happening again.