After the death of her policeman father, Xiaomai begins to look over his old journals filled with notes about the cases he investigated over the years. The mention of a purple scarf in the notes particularly catches her attention, prompting her to purchase a similar scarf from a mysterious website that claims to sell everything, as long as one can pay the price. Soon after, Xiaomai's close friend is found dead, strangled by a purple scarf. All of this awakens Xiaomai's memories of her childhood sweetheart Qiushou, whose mother was also strangled to death with a purple scarf by an unknown killer. Xiaomai and Qiushou grew up together and fell in love, but he suddenly disappeared from her life 15 years ago without a word. She begins to believe that Qiushou has returned and may be seeking revenge.
No ano de 1967 na China, o jovem estudante Chen Zhen (Shaofeng Feng) é enviado para viver entre os nômades do interior da Mongólia. Entre o avanço da civilização e os tradicionais inimigos dos nômades, os lobos, Chen se questiona sobre a similaridade entre humanos e animais, comcluindo que todos são residentes e invasores lutando para encontrar seu lugar no mundo.
Na cidade de Jinshan (China), o frio traficante Timmy Choi (Louis Koo) é preso quando sua operação de refino de cocaína é desbaratada. Pressionado pelo capitão de polícia (Sun Honglei), Timmy pode se livrar da pena de morte se ajudar a derrubar todo o resto do tráfico local
