Ricky is a street kid – sharp-witted, quick, and mostly on the wrong side of the law. When he tries to steal from the wrong people, he is rescued by a mysterious man named Felix, who makes Ricky an enticing offer: an apartment and a hundred pounds a week. All he has to do is take lessons from Felix. Soon, Ricky finds himself learning about surveillance techniques, how to become invisible in a crowd, and hand-to-hand combat. But what is it all for? Ricky has no idea until he receives his first mission and his entire world is turned upside down.