Earl is furious when Mrs. Snodgrass's class doesn't recognize him as one of history's greatest villains. To show everyone who the world's greatest fiend really is, he launches a full scale, tactical war, and he sends a troop of treacherous, life-sized comic book villains in to conquer the school. Although the boys think that they are the only ones with enough comic book knowledge to thwart the evil villains, they soon realize that they know nothing about these characters! Fortunately, Lydia's knowledge of comic book trivia is tremendous, and she's the only one who can identify each villain's weakness. Lydia and the gang defuse Earl's latest attack, once again saving Flying Rhino Junior High from impending doom. Impressed by Lydia's trove of comic book knowledge, the all-male comic book club realizes that boys and girls can not be stereotyped, and it invites the girls to join.