The Chrysalis

In Shanghai, on Valentine's Day, 14 February 2011, hairdresser Guan Wen Xin, age 27, the illegitimate daughter of a French man and a Chinese woman, is kidnapped by her onetime best friend, rich girl Dai An Ni, immobilised with muscle relaxants, and held prisoner in a flat. Both had fallen for the same man, teacher Luo Jia, while at university, and An Ni had lived with him for two years in the US; but after Luo Jia chose to propose to Wen Xin, An Ni has returned from the US to get her revenge.
Anni tries to electrocute Wen Xin in a bathtub but the latter escapes; during their subsequent fight, Wen Xin is knocked unconscious. She wakes up, exactly three months later, on a road in the rain. After finding Luo Jia, she discovers the flat in which she was held prisoner - immediately opposite Luo Jia's - is now empty and An Ni has disappeared. An Ni's father, the psychiatrist head of Puen Hospital, confirms he last got a message from his daughter on 14 February; after putting Wen Xin through some tests, he confirms she has amnesia.
Staying with Luo Jia, Wen Xin keeps getting horrific visions. One day, in the metro, she meets Wu Guang Ming, an artist who says he found her three months ago and let her live at his flat. Luo Jia then tells Wen Xin that the body of An Ni has been found in the sea near a greenhouse she owned outside the city; the body is badly decayed after being in the water for three months. The next day, at An Ni's funeral, Wen Xin suddenly seems to become possessed by her personality, saying she was pregnant by Luo Jia and Wen Xin was responsible for the loss of her baby. Wen Xin now starts to believe that An Ni's ghost has taken over possession of her body.