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 s such as Fangtang and Baizhong, can Guan Chao successfully complete the task? What kind of challenges are awaiting Guan Chao in each memory layer...