"Red Sea Demon Shadow" French thriller horror film.X city marine researcher Davis in order to control the marine resources, so as to master the wealth and power in the world, the use of cloning technology, to create an octopus of the ancient Cretaceous period. The octopus is capable of reproduction, a cell can generate a new individual, people lost control of the dinosaur, so the beautiful, quiet seaside town is covered with the shadow of terror.