一班中學生無心讀書，校長因眾人Mock試分數奇低而召見眾人，指令如考試不能取得A的話，便取消他們歌舞劇之畢業表演項目。他吩咐高材生 GEM及William盡力令眾人在會考中獲得好成績。由於會考迫在眉睫，GEM及William迫於無奈教眾人在會考出貓。眾學生一邊學習新穎的出貓技術，一邊為中五畢業生表演練習，期間笑料百出，但最後眾人痛定思痛，在重考之時決定用自己真正的實力作答……

Students are twisted in their one last show of high school life and one critical public examination of their lifetime. With limited time, cheating in examination seems to be an easy shortcut, those masters of cheat get caught and have it coming? so how will they treat the re-exam after all?