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Ye Hengqing's brother, sister and the heroine are a family that has survived for a long time. When Ye Hengqing was just born and did not understand responsibilities, a group of alien creatures broke into his territory and destroyed everything. When Ye Hengqing understood his responsibilities, in order to make up for his mistakes, he traveled through time and space to different worlds to eliminate these alien creatures. The story begins with the first target Ye Hengqing discovered.