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Chapter 1: I may have traveled to the future - a newspaper from the future announced: Within four days, three people will die on this island! Chapter 2: I have the ability to exchange souls - I dreamed of being strangled by someone's neck and suffocated, but someone else died! Chapter 3: Why did she die so many times? Every day she lived was like yesterday, and she was killed in various ways every day. Chapter 4, a woman who traveled back in time from 1993 - a woman from the past appeared in a small town, and a woman who seemed to have been taken away by an alien spacecraft disappeared. Chapter 5: There is one person among us who is not a human - in 2030, guess who is the AI?

A corpse brings up two old cases. There are many clues but it is difficult to find the source. Interpol Zhou Yu decided to investigate new and old cases together, but he fell into suspicion after locking in the target. The alibi that is difficult to crack, the unrelated persons involved, and the evasive family members of the victims... What kind of story do the cold bones that have been buried in the soil for decades in the hot summer want to tell...