Jason Friedberg and Aaron Seltzer set their parodic sights on the largest genre of them all, Hollywood's big-budget, special effects-laden, blockbuster franchise films.

The story centers on four not-so-young orphans: one reared by a curator at the Louvre (where an albino assassin lurks); another, a refugee from Mexican "libre" wrestling; the third a recent victim of snakes on her plane; and the fourth a "normal" resident of a mutant "X"-community. The hapless quartet visits a chocolate factory, where they stumble into an enchanted wardrobe that transports them to the land of Gnarnia (with a silent "G"). There they meet a flamboyant pirate captain and earnest students of wizardry - and join forces with, among others, a wise-but-horny lion to defeat the evil White Bitch of Gnarnia.