John and Philippa are twelve year old twins, with a remarkably beautiful mother, and a very rich, not very handsome, but very kind father, who live a life of luxury in New York. One day, their wisdom teeth appear simultaneously. Then they both have the same dream in which their uncle, Nimrod tells them to come to London. He tells them that they are Djinn(genies).They begin the adventure of a lifetime, from Cairo to London, from pink Ferraris to camels. With a wise old uncle named Nimrod, his one-armed butler who is called Groanin, his enormously tall Egyptian servant called Creemy,and an agoraphobic ancient djinn called Mr. Rakshasas. From New York to London to Egypt, back to London and back, the twins' adventures are filled with excitement as they undergo training in the use of their newly discovered powers, but are also fraught with danger, as they battle the evil tribes of djinn, to preserve the balance between good and evil in the world.