On the eve of the demolition of the Kowloon Walled City, Chen An's grandfather Chen Bo was hacked and seriously injured in an alley. When Chen An arrived, his grandfather was breathing his last breath and gave him a bronze medal, saying it was a token of the "talker" of the city. Before Chen An could ask clearly, the police came. He could only hide the bronze medal in his inner pocket and watch his grandfather being carried into the ambulance. That night, Chen An stayed up all night, squatting on the rooftop of the walled city, looking at the maze that was about to disappear.
