In a remote part of the Pacific Ocean, at a depth of seven miles, where the bottom is split by huge cracks from which steam saturated with minerals gushes, an antediluvian predator lives. In the impenetrable darkness of this hellish abyss, the deadliest of all living animals has lived for a hundred million years - the Carcharodon megalodon, the sixty-foot, twenty-ton ancestor of modern great white sharks. Professor of paleontology Jonas Taylor, a former elite pilot of deep-sea submersibles, has been writing about megalodon and lecturing for many years , trying to forget the unforgettable - the tragically ending expedition, which convinced him that the primeval monster still exists today. During a secret dive into the deepest ocean canyon, Taylor barely escaped the huge jaws of a prehistoric monster, capable of lifting even a tyrannosaurus from the water. Taylor was encouraged to take an even deeper dive. What he may find should silence the skeptics, but when it is lifted from the seabed, the ocean tides will turn blood red until the end of time.

This is a gripping and terrifying tale of the quest to capture a prehistoric a predator living in the deepest canyon of the world's oceans. The terrible shark managed to destroy not only people, but also the first American submarine, the Nautilus.