Facing a collapsing world, Zhou Qin, as the last human being who chose to stay on the earth, was unwilling to watch the earth being eroded and the tragedy of human extinction. He was selected by a being who claimed to be the "Manager of Time and Space" and began to experience every choice in human history that was related to the general direction of mankind. He found the "arbiter" of each choice in the experience and found out the reasons for his/her choice.
Purpose: Every choice has meaning