In the Gulf of Mexico, flames erupt from the seabed turning oilrigs into infernos… Luckily, Kurt Austin and the NUMA team are on hand to rescue the crews before the burning rigs sink beneath the waves. But what caused this fireball? It's soon clear this is sabotage, but at the same time oil fields around the world are dying. Tasked with discovering the truth, Kurt is led to alternative energy scientist Tessa Franco. Franco's company seeks the end of the oil age. But is she part of the solution - or the problem? With the world simmering on the verge of catastrophe, Kurt's in a race against time to discover the extraordinary truth - one that may lie with an audacious experiment and a submarine lost fifty years ago…