Description：A female reporter (Deanie Ip) was entrusted to follow up and interview a social worker (Feng Cuifan) who is loyal to the cause of helping the mentally ill. For more than 20 years, he has been dealing with street homeless people, aiming to guide them towards rehabilitation, but his actions have not been responded to by people. The female reporter witnessed his care for the garbage man (Chow Yun-fat), the crazy guy (Tony Leung) who wanders around the vegetable market all day, and the recovered patient (Paul Chun) and their sad stories. The recovered patient actually has intermittent mental illness. After being oppressed by life, he missed his son and broke into the kindergarten with a knife, causing a bloody incident...