After watching an actress playing violin in a TV drama, CHI-LEI finds violin playing really cool. LAI-SHEUNG and MA KEUNG encourage her to learn violin but MA CHONG and CHI-YAN thinks that CHI-LEI's passion will not last. MA KEUNG is selling a large quantity of musical instruments from a famous DJ to his customers. One customer picks up a violin but MA KEUNG reveals that he has to get LAI-SHEUNG's consent before selling it. LAI-SHEUNG gives professional comments on the violin. CHUNG BIU and the other staffs are surprised to realize that she knows so much. While MA KEUNG goes shopping with LAI-SHEUNG, they meet LAI-SHEUNG's younger schoolmate GRACE and they chat about their past. GRACE expresses that if LAI-SHEUNG had applied for a position in the Orchestra, she must have become the chief violinist and MA KEUNG is shocked... CHUNG BIU brings MA KEUNG to their old school to pick up some sports goods……