Kline, a former Los Angeles police officer turned private detective, is hired by a powerful pharmaceutical conglomerate boss to investigate in Asia the disappearance of his only son, Shitao, whom he has not seen in person since the boy was ten. Now in his 30s, Shitao has gone missing in the Philippines where he had been helping in an orphanage.

In 1951, a young Vietnamese girl arrives at a Saigon household as their new servant.

Follows a young cyclo driver on his poverty-driven descent into criminality in modern-day Ho Chi Minh City. The boy's struggles to scratch out a living for his two sisters and grandfather in the mean streets of the city lead to petty crime on behalf of a mysterious Madame from whom he rents his cyclo.