The Eternal Training Ground continues to expand its influence, while the Eternal city-state thrives. The creatures of ETG venture further into the outside world, gathering new patterns, knowledge, and secrets—refining their spycraft to a level that allows them to infiltrate even the great powers. Ace has accomplished what many can only dream of, becoming one of the richest men alive and ruling over one of the wealthiest nations in the world. His success is driven by the powerful trade winds and the now-legendary dungeon beneath his nation. But the great powers can no longer ignore the dungeon that continued to get deeper at rapid speed. Can ETG once again defy those who seek to shape its future?