The story is mainly based on Ultimate Class 1 and 3. At the end of Ultimate Class 2, due to the changes by Lei Ting and Zhong Wanjun, everything was restored. Because Wang Dadong made a mistake, and there were changes in the Golden Time and Space KO list ten years later, he was sent to investigate, and Ding Xiaoyu was also sent to assist. Wang Dadong was not told about Ding Xiaoyu's arrival. In the Ultimate Class ten years later, the boss is Lei Ting, but Xiao Yu opens a bookstore near the Ultimate Class. The leader of the Iron Spacetime Alliance sends Xiu, the commander of the Dongcheng Guards, to travel through time and space to deliver the news. This is how the story begins.
Motto: Age is not a problem