A smarty-pants duo, Pete is a computer junkie and the class nerd; Lilly a skinny, awkward girl spouting factoids she learned from countless books—including the dictionary she reads with as much enjoyment as a novel. When Pete and Lilly find themselves trapped in a time warp both dangerous and exciting, they travel through space and time to solve mysteries of the past.

Along the way, they rescue unusual characters including a mischievous clay imp with magical powers. It isn't long before Pete and Lilly realize their wacky little mascot may not intend to offer them friendship and loyalty. Breaking away from his dominance may become their greatest challenge to getting home again.