FBI Agent Jack Kenyon is an expert at cyber warfare, in which hackers and secret government agencies leverage weak spots in the Internet to cause carnage to their enemies. Assigned to uncover an industrial spy ring trying to steal Cyberworm, a US secret code, Jack is sure the murder of a double agent is linked to his investigation. But the sudden passing of his aunt Lydia in London complicates his plans. As the named executor of her estate, Jack flies to England, only to discover evidence that Lydia’s death may have been connected to a terrorist plot to unleash a devastating computer virus.