When a massive explosion tears a hole in a 747 over Hawaii, nine passengers strapped to their seats are sucked out of the cabin. With two engines on fire, the flight crew somehow manages to turn the crippled plane around to land in Honolulu. And though investigators immediately suspect an act of terrorism is to blame, the search for answers ultimately leads to a deadly short circuit.
By scanning the locations at the bottom of the ocean where sunken ships, treasures and even cities lie, the show tries to answer what they look like, how they got there and if they hide any secrets.