On the planet Cybertron, a war was waged between the Autobots and the Decepticons for control of the Allspark, a mystical talisman that would grant unlimited power to whoever possessed it. The Allspark is smuggled off the planet, but Megatron goes in search of it. He tracks it to Earth and his desire for power sends him into the Arctic Ocean. The sheer cold forces him into a paralyzed state. His body is later recovered, and before going into a comatose...

A deep-sea submersible filled with an international research crew lies disabled at the bottom of the Pacific after having been attacked by a massive shark previously thought to be extinct. With time running out, expert deep sea rescue diver Jonas Taylor is recruited by a visionary Chinese oceanographer to save the crew and the ocean itself from this unstoppable threat that is a pre-historic 75-foot-long shark known as the Megalodon.