Zane, a researcher of outer space civilization, is shy and unsociable by nature. He has always believed that aliens exist. On this day, Zane accidentally received a mysterious signal. After monitoring and judgment, Zane determined that it was sent by aliens. Zane was ecstatic about this discovery, but his boss thought he was crazy and fired him. Zane didn't want to give up. He continued to monitor the signals and found that these signals were sent to the interior of the earth. From this, Zane concluded that aliens not only existed, but also sneaked into the world of the earthlings. Zane decided to investigate by himself. He traced the source of the signal all the way to Mexico, where he met a female scientist who studied global climate change. After combining their research results, the two suddenly discovered that aliens are changing the earth's climate, trying to make the earth no longer suitable for human habitation, and trying to take over the earth after human extinction. They were stunned by this earth-shattering discovery, and they thought about how to prevent this disaster from happening..