Twenty-second Series.

During the An Lushan Rebellion of the Tang Dynasty, monsters are everywhere and the people were destitute in the Central Plains. Li Haobai started from the Bashu and wanted to go to the front line to make a meritorious deed. On the way he was swallowed by the monster. By coincidence, Li Haobai and the guardian of the dragon’s veins merged with each other to obtain the power of the black dragon. And he has since been involved in the struggle of various forces.

The Shaderan family has fallen on hard times, and the avaricious and callous baron and baroness will stop at nothing to regain status. They favor their beautiful daughter Anastasia, hoping to marry her into wealth, while they treat the second daughter, Marie, no better than a servant. Years of abuse have convinced Marie that she is truly undeserving of love and attention. On Marie's birthday—used as a ploy to showcase Anastasia—Marie meets Count Kyros Granado, who is immediately charmed by Marie and her knowledge of his culture. Believing Anastasia to be the one he fell for, Kyros proposes via letter. But Anastasia tragically dies on her way to marry him. Forced to take Anastasia's place, Marie becomes Kyros' fiancée, just as he originally intended. Although Marie terribly lacks confidence, Kyros gently helps her find her worth, awakening her to her own beauty and the true meaning of being loved.

In order to go back to the past, Guan Chao tries hard to find the "burning stone" that activates the time gun, but accidentally falls into the Memory Management Bureau. Only by conquering the BUG people in the memory layer can he return to reality. With the help of administrators such as Fangtang and Baizhong, can Guan Chao successfully complete the task? What kind of challenges are awaiting Guan Chao in each memory layer...