The police sends FIAT to the hospital as he is hurt. Unexpected?ly, the Big Circle Gang seizes FIAT when he is on the way to the hospital. The police is then sure that FIAT is involved in the robbery and sends people to oversee his sister, TIN JIANG. The police could then have some clues when FIAT contacts his sister. FIAT gets to know that the jewellery in his traveling bag are stolen things after beaten by the Gang. He then tells the Gang its location. The Gang sends HEUNG YEUNG slipping into the house to get back the jewellery. However, YEUNG is so frightened that he flees away when he has seen some uniformed police in the street. The police has rented a flat which is opposite to FIAT's flat. At he beginning, PUI thinks that it is a tough job. Unexpected?ly, he feels very happy when he has seen, JIANG, who is beautiful and lovely. . PUI has connected an eavesdrop instrument in FIAT's telephone……