The cosmic crisis involves a mysterious door, which is the door of time and space.
The story begins with a few children, but how can the fate of the universe be tied to a few ten-year-old children? What is the root cause and what is the secret work between adults? At the beginning, was the historical story Jack showed the children just to tell them to respect history and not to tamper with history? What does the god Dias, the kingdom of the dead, have to do with this matter? What is Mr. Zhang's mission in the world between cracks? What kind of story is there in Chen Chengen's dream? Why is there always a hint of sadness under Fusu's smile? Why does the bewitching fairy appear mysteriously?
What about Kevin's life experience, and is his mother still alive? Why do so many incidents involve her mother's name?
The solution to one problem brings more unknowns.
Purpose: Record childhood years
