Every few years, the "Summer of Anu" is rumored to happen, a time when the demons in the tower become weak because of the divine protection of the sky god, Anu. In response, the country of Uruk has launched an attack on the tower, intending to wipe out these creatures and establish themselves within the structure. This is the third occurrence of the Summer of Anu, providing the perfect opportunity for the Uruk army to eliminate the monstrous Druaga permanently. However, they are not the only ones in the tower. The first floor is home to Meskia, an entire city teeming with soldiers and adventurer treasure seekers, all searching for the fabled Blue Crystal Rod at the pinnacle of the tower. With numerous factions with their own objectives and plans in the mix, the outcome of this odd summer is completely uncertain.