While hunting down bootleg kung-fu DVDs in a Chinatown pawnshop, Jason (Michael Angarano) makes an extraordinary discovery that sends him hurtling back in time to ancient China. There, Jason is charged with a monumental task: he must free the fabled warrior the Monkey King, who has been imprisoned by the evil Jade War Lord. Jason is joined in his quest by wise kung fu master Lu Yan (Jackie Chan) and a band of misfit warriors including Silent Monk (Jet Li). But only by learning the true precepts of kung fu can Jason hope to succeed -- and find a way to get back home.