Overview:MARK announces during the social dance class that a number of thefts have occurred. At the same time, KIU is very fond of the expensive dance shoes MANDY is wearing but MANDY indicates that they are not sold in HK. MADAM LIN has found a luxury watch for KEUNG and KIU is very interested in it. KEUNG claims that his watch is a counterfeit and SAI has a genuine one instead. While helping SAI to clean his flat, KIU finds that his watch has stopped and therefore takes it away to replace the battery. SAI helps KIU to open the door for CHUEN as to do some repair work. Then he finds that KIU has taken away his watch… Inside the dance room, SAI finds that KIU has a pair of dance shoes which look the same as what MANDY has got. SAI cannot stop himself from blaming KIU. Meanwhile, MANDY and the other classmates come. When SAI sees the dance shoes that MANDY is wearing, he then realizes that he has wrongly accused KIU…