Trying to evade intelligence agencies out to assassinate him, the Cerebellum, an Egyptian scientist with a past association with the Iraqi nuclear program, rents a room on the roof of a brothel in a Cairo slum. His interaction with the other residents is limited; instead he spends most of his time in the virtual world, where he has a love affair with Candy Girl, a gorgeous avatar. On the other side of the planet, an ex-NSA agent has joined a secret organization whose mission is to assassinate Iraqi scientists. He does not allow his doubts about the legality-or the ethics-of his mission to interfere with his work. He chases his victim relentlessly, but when his top-of-the-line equipment fails to locate the Cerebellum in Cairo"s slums, he takes the chase to the virtual world.