Atlantis Devil's Sea

Heroes from past and present unite to save our timeline from being utterly destroyed in the present.
In 1937, Amelia Earhart is on the most dangerous leg of her round the world flight, near the Devil’s Sea. A dark Shadow rises in front of her and swallows her and her plane, never to be seen again. Where did she go?
In 1628 BC, a volcano erupts, one that would become legend as the eruption that destroyed Minoan Civilization. But a small group of priestesses stand fast against the dark Shadow that precipitated the destruction.
In 79 AD the oracle of Delphi must join forces with the most fearsome gladiator from the arena of Pompeii to fight the Shadow, which destroys Vesuvius. And the XV Legion is sent on a quest that causes it to disappear from the Roman Empire and into the fog of history.
In 1986, the Shadow appears inside of Chernobyl, sucking power from the reactors and causing disaster.
Present Day: Former Green Beret Eric Dane leads his team against the Shadow as the Ring of Fire around the planet ignites. Dane must track down the mystical crystal skulls that have baffled scientists, to use them as a weapon against the Shadow.