|Marine biologist, Skylar Shane, hires an expat charter boat captain, Jack Bowman, to help her find prehistoric life form samples in the north Sumatran Sea. During the expedition, they run into some of Jacks friends, a gang of smugglers headquartered on a fishing platform in the middle of the sea. Tamal, an orphan sold into servitude by his dark shaman uncle, begs Skylar to take him away. She empathizes with the boy not knowing what lurks beneath the dark inky water, waiting to surface. Ever since Tamal arrived, mysterious things begin to happen and Skylar and Jack must battle the terror once locked deep in the abyss by an old civilization.