校長為免余浪沖再度重演去年出醜事件而影響校譽，指令Miss翁阻止余浪沖參賽，但她堅決守護學生應有的參賽權利，而不惜開罪校長。得到李馬榮的指導，余浪沖的潛力終於全面爆發，並在50米自由泳爆冷擊敗A班主將羅力森，奪得首面個人金牌！然而高傲的羅力森無法接受敗給一個自己曾經瞧不起的人，頽然退出接下來的接力賽。隊長黃亞樂極力勸阻，反令羅力森將長年被對方壓著的不滿爆發，令五連霸的A班陷入前所未有的危機。
The principal orders Ms. Yung to stop Yu Long Chung from participating in the competition due to last year's scandal. However, Ms. Yung chooses to guard the students' right to participate in the race. While Lo Lik Sam believes that he will win the individual event this year, someone everyone least expects takes them by surprise and ties the record with the record holder, Wong Ah Lok.
