 This is the story of Bill Smith, who is a National Transportation Safety Board investigator hired to determine whether human error is the cause of a collision of two jumbo jets, both of which crashed! He and his team of investigators are very confused by the words on the cockpit voice recorder because the fire didn t seem to start until after the crash. But at the same time, a theoretical physicist named Dr. Arnold Mayer has a real professional curiosity about the crash, which borders on science fiction. While giving a lecture, he talks about time travel and the possibility of visitors from the future.