Told through the eyes of sticky-fingered eight-year-old boy Big Ears, Echoes of the Rainbow takes place in a close-knit grassroots community in 1960s Hong Kong. Big Ears' mother and father run the neighborhood shoe store, and his older brother Desmond is every family's dream son - an outstanding athlete with grades worthy of Hong Kong's best school.

A corrupt red oil kingpin enlists the aid of a female police officer to help find his son.