In the capital city of Beijing, there is a special group who are affectionately called "alley housekeepers" by the people. The "alley housekeeper" is not a leader, but in their heart they wear all things of the neighborhood. There are many problems directly related to the common people, such as neighbourhood disputes, parking on roads, private construction, public toilet renovation, environmental improvement, and caring for the empty-nest elderly.
When the film broke out that a young man coming from a rich adopted family murdered his birth father, the controversy around the case hit a nerve with the public at large. An experiment was held through the form of virtual court inside a college to discuss this hot topic. During the process of virtual court, 12 Chinese people from different walks of life got together and discussed the case like a jury. Through intricate and thought provoking questions from the main character, people start to think more critically about the case. During this process, one sees the revelation of people's bias and emotional-preconceptions about the suspect, about each other, and also about the society.
