When a submersible is attacked deep within the Mariana Trench by a 75-foot megalodon -- a massive prehistoric shark thought to be extinct for over 2 million years -- it's up to a grizzled rescue diver to lead the mission to save her crew.
When a submersible is attacked deep within the Mariana Trench by a 75-foot megalodon -- a massive prehistoric shark thought to be extinct for over 2 million years -- it's up to a grizzled rescue diver to lead the mission to save her crew.
