Chao (25, male) takes a DV cam on the street looking for documentary subjects and accidentally meets Tung Lap (27, female) and Z (19, female, retarded), selling counterfeit goods in an underground tunnel. Chao plans to record its production from raw materials to the sale process. The filming project is interrupted by a notice (for Z's disappearance) posted by Z's relatives. Tung Lap realizes that Z has Developmental Daunt Don Syndrome (a fake disease). After Tung Lap escapes from the city management, she comes across her ex-husband. Pondering for a few nights, Tung Lap contacts Z's relatives and sends him home on New Year's Eve. The project goes in a mess. Chao packs up the packages and prepares to leave Tung Lap's place. Tung Lap takes the number left by her ex-husband and asks Chao to choose a set of clothes for her before she leaves.
