Qiang lives in the big city and struggles to take care of his mentally unstable mother and a 5-year-old sister, Hui Shan. When a speeding car kills Hui Shan in an accident, Qiang is desperate to claim his sister's body. Unfortunately, he can't prove his relation with Hui Shan as she was never registered at birth. Qiang's mother is no helping given her condition, so Qiang is forced to face this predicament on his own.
