Lydia Chin is hired by Grandfather Gao, one of the most respected figures in Chinatown, for what appears to be a simple task. Lydia, along with her professional partner, Bill Smith, is to fly to Hong Kong to deliver a family heirloom to the young grandson of a recently deceased colleague of Grandfather Gao. But before they can deliver the heirloom, the grandson is kidnapped and two separate ransom demands are made.