SING, DING and SZ carry out investigation in Uncle MAO’s home for they believe that Uncle MAO was killed by somebody… After discussion, they believe that MEI’s cousin is the key suspect and SING suggests luring him with MEI’s missing cat. MEI HA informs KWAN that KA CHAI is missing. KWAN is very nervous and she asks JIT to help finding him. SING returns home and he meets JIT… SHUN asks DING to clear the misunderstanding between him and the magazine editor. DING invites HIM for lunch but they start a quarrel again… SZ pretends to be the shopkeeper of a pet shop. HING FAI comes to adopt MEI’s cat and SZ talks with him. SING risks his life to capture FAI and DING rescues SING recklessly…