Is Natty dreaming or has the crystal that he found really taken him to another world?
Natty isn't sure, but he doesn't have a chance to figure it out, as he must escape from the darkness of Skull Mountain before teeth-gnashing man-monsters tear him apart. Then, at the Temple Village, he is called Nasto and told that he is The Land's savior. He is also told that an evil being called The Great Darkness wants to use the crystal to destroy this strange and wonderful world.
So Natty must journey back to Skull Mountain and take the crystal from The Land.
Joining him on this journey are a Yoelivan, two Guiders, a giant, and a princess. Natty meets many good people, but he and his companions also battle Minions, a double-headed sea serpent, and other evil creatures of The Great Darkness.