Seven-year-old Wan Tian transmigrates from ancient times to modern-day Hangzhou. Though her body is small, she possesses peerless martial arts skills. In this unfamiliar world, she sees the Black Cat gang running rampant and preying on the innocent. Relying on her extraordinary fighting skills, Wan Tian sets out on what seems like an impossible mission to take down the gang. But the rules of modern society, surveillance cameras, and the emphasis on protecting children become invisible shackles. As she defeats gang members one by one, the Black Cat organization launches an all-out hunt for the mysterious little girl. Wan Tian must find a balance between hiding her identity, adapting to modern life, and fighting the gang, all while searching for a way home. When she finally confronts the leader of Black Cat, she discovers that a greater secret lies behind the battle, one tied to the truth about her transmigration and the fate of two worlds.
