Teenage spy Cody Banks (Frankie Muniz) returns for another mission, and this time around he has a new partner, the humorous and amiable Derek Bowman (Anthony Anderson). Cody and Derek must travel to England to foil the plot of Victor Diaz (Keith Allen), a villainous operative who aims to wreak havoc with experimental mind-control technology. Joining Cody and Derek is pretty British schoolgirl Emily Sommers (Hannah Spearritt), who turns out to be a fellow undercover spy.