A mummy is discovered in a secret chamber deep in Egypt's Valley of the Kings, and Dr. Joann Fletcher and a team of renowned scientists from the University of York Mummy Research Team set out to determine whether it's Queen Nefertiti. If it is, the finding, coordinated by a Discovery Channel Quest Expedition, will be one of the greatest archaeological discoveries since Nefertiti's stepson -- King Tut -- was discovered in 1922.