A mysterious underwater grave is investigated by mummy expert Ramy Romany who studies the world's dead to uncover their secrets. Locals think the grave is guarded by a Mayan serpent deity. But Ramy uncovers evidence of biological warfare.

Deep in the Peruvian jungle, dozens of mummies have been found in cliffside tombs. These remains could be the first Europeans to settle the new world. Mummy expert Ramy Romany searches for undiscovered bodies to unlock the mystery.