After knowing that SIU has seen SING on the day of his missing, CHING hurries to look for her to dig out more information. Unexpectedly TSAU uses a child actor to play the role of SING; CHING is disappointed and leaves. Out of mistake, TSAU drops the pair of sport shoes in the street; the sport shoes that CHING bought and intended to give SING as birthday gift two years ago. KWOK CHING, the grandpa of YAN, comes to the detective office for seeking help, hoping that the detective office can locate his missing sport shoes that he lost 25 years ago. Actually, KWOK CHING was “Golden Right Leg” of one of the Hong Kong football teams in those days. Ever since he lost the pair of lucky sport shoes, he became unlucky and discouraged in his football life. CHING starts to investigate from the old soccer fans, but he fails to obtain any information.… ...