9 year old Cheung Jai is the son of a cafe owner. When Ah Fun, a child without any identification, appears, Cheung Jai experiences and learns of the effects of identity and nationality to a person's dignity. The sky of the children melt into the complex color of the adult society. Cheung Jai's dream is to find his brother who has left home since his childhood, unfortunately he is severely punished by his father for it. His little heart faces unprecedented suspicion and disappointment in trust. At this time, his closest grandmother passes away, his maid is fired, Cheung Jai suddenly becomes very lonely......