Alien An Dong took on the appearance of the elite CEO Lu Keying on Earth to investigate a mysterious ray. He accidentally swapped consciousness with the young girl Su Xiaoran. In order to avoid breaking the rules, Anton could only live on Earth in the identity of Su Xiaoran and ended up causing many hilarious mishaps with the girl who now occupied his body. The interstellar task force demanded An Dong's prompt return, and the return date was approaching, but the two of them found it hard to part ways...