Jason has the undeniable outlook of a Chinese - black eyes, black hair and yellow skin. Yet, he is still addressed as "Gweilo" by the others, even his friends, and the reason is because of his mother tongue. To support his identity as a Hong Konger, Jason wants to find out the story of his grandfather, who had fought alongside locals in World War II.
During the journey, He met two teenagers, Yanyan, a girl who immigrated from mainland China 5 years ago, and Calvin, a boy born in Hong Kong, whose main interest is PSP. Many conflict arises because of their cultural differences and prejudice against each other. In the end, can Jason proof himself is a "Hong Konger"?