A Sun is a Taiwanese drama film directed by Chung Mong-hong. The story revolves around a family living in Taipei, whose lives are turned upside down when one of the sons gets involved in a violent crime. The film explores the complex dynamics within the family, as they struggle to come to terms with the consequences of their actions. A Sun has received critical acclaim for its powerful performances, thought-provoking narrative, and its exploration of themes such as guilt, redemption, and the pursuit of happiness.