Leonard Nimoy hosts this two-part A&E series that explores a few of the world's most enduring legends and myths and asks some thought-provoking questions. Are dragons merely the stuff of legend, or did they actually roam the earth? Were King Arthur and his Knights of the Round Table created by imaginative storytellers? Did the lost civilization of Atlantis ever really exist? And is the Holy Grail still out there just waiting to be found?