While Grace Wong is driving her vehicle, her car is knocked down by another vehicle and she is abducted from the scene. The kidnappers, led by Fok Tak-nang, return to Grace's house, where they kill her maid, and start searching the place. Grace is then taken to an abandoned house, where she manages to repair a destroyed telephone. With the phone, she manages to contact Bob, a single father and debt collector. Bob has promised his son, Kit-kit, and his sister, Jeannie, that he will meet them at an airport, before Kit-kit boards a flight to Australia.