Seven-year-old Wan Tian traveled from ancient times to modern Hangzhou. Although he is young, he possesses unparalleled martial arts. In this strange world, she witnessed the gangster "Black Cat" running rampant and oppressing innocent people. With his extraordinary martial arts skills, Wan Tian embarked on a seemingly impossible anti-gang operation. However, the rules, surveillance and awareness of child protection in modern society have become invisible shackles for her. As she defeated gang members again and again, the "Black Cat" organization began to hunt down this mysterious little girl. Wan Tian must find a balance between hiding his true identity, adapting to modern life, and fighting against gangs, while looking for clues to return home. When she finally faced the "Black Cat" boss, she discovered that there was a bigger secret hidden behind the battle, related to the truth about her time travel and the fate of the two worlds.
