In 1993, UFOs appear over every major city in the world. They remain floating in the sky; silent, motionless, unidentified. 29 years later, there is a rumor that some among us are aliens.
Overview：In 1993, UFOs appear over every major city in the world. They remain floating in the sky; silent, motionless, unidentified. 29 years later, there is a rumor that some among us are aliens.
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