Yang Ruyi, a fashion magazine photographer, lives with her elder sister Yang Ruxing, a rational, introverted detective fiction author. Ruyi has... More

Yang Ruyi, a fashion magazine photographer, lives with her elder sister Yang Ruxing, a rational, introverted detective fiction author. Ruyi has inadvertently photographed a couple while they were passionately making love. The next day, in a shopping center not far from her home, Ruyi finds the woman with a different man, married with a child. Ruyi shares her secret with Ruxing, who is suffering from writer's block. The two sisters begin to observe and survey the couple; eventually, Ruxing even writes some of her observations into her novel. Late one night, Ruyi is awakened by sounds coming to her through the audio surveillance equipment. Two people are arguing,but as she picks up her camera to photograph she can only see two vague, dark outlines wrestling one another. Ruyi calls the police but upon arriving they enter and nothing seems out of order. Ruyi is convinced she has seen something and takes the film to her friend's enlargement lab. When the photos come back from her friend's lab, Ruyi discovers a third outline that looks surprisingly like her older sister. Close