A Successful boxing trainer discovers that her boyfriend, A reigning champion, has been cheating on her with her own sister. She sets out to get revenge by training the one man capable of dethroning him his arch-nemesis Kayden.
We don't see the woman on the train moving through Sichuan, just the trees, rivers, lakes and houses passing by the window, vanishing behind the blur of vegetation, segmented by the tunnels.
