When Cryptanalyst John Decker of the FBI is assigned to the Joint Terrorist Task Force in New York, he has no idea he is about to be thrust into a deadly plot of eco-terrorism masterminded by Jihadist El Aqrab, the Scorpion, recently arrested after slaughtering a family in Tel Aviv. Following the theft of 8 kilos of Highly Enriched Uranium, an ultimatum is issued to the West: Release El Aqrab or a nuclear bomb will be detonated. But, at the last moment, El Aqrab escapes and the authorities never get the bomb. Now, only Agent Decker, assisted by brilliant and beautiful oceanographer Emily Swenson, can solve the mystery of the bomb's destination - La Palma, in the Canary Island chain. Decker's convinced that El Aqrab's real plan is to blow up the Cumbre Vieja volcano in order to set off a mega-tsunami. Decker and Swenson only have six hours to stop El Aqrab, defuse the bomb, and prevent an eighteen-storey wave from annihilating the Eastern Seaboard.