Originally Posted by Wikipedia Information

It has been sixty years since King Gilgamesh defeated "the tower" single-handedly, and now the tower is reborn again. The "Summer of Anu" is a season that comes every few years during which the powers of the monsters within the Tower wane thanks to the grace of the great god Anu. Each Summer of Anu, the armies of the Uruk Kingdom secure their strongholds within the Tower, aiming to eventually conquer the upper floors. The story begins with the third Summer of Anu. The city of Meskia is the first stronghold built on the first level of the Tower. In addition to the Uruk Army preparing for their third campaign against Druaga, innumerable adventurers called "climbers" have been drawn to Meskia by rumors of a legendary treasure believed to be hidden on the top floor of the Tower. Jil, a young guardian, has traveled to the tower and Metz Kier, the last safe stop on the first floor of the tower. Jil wants to gain the Blue Crystal Rod, the legendary treasure that resides on the top floor of the tower. On the top floor is the evil lord Druaga, and numerous monsters among the way.