In his classroom in impoverished Walworth, south London, teacher Alex Beard wrestles with explaining Macbeth’s dagger scene to his 15-year-old charges. He mourns the fact that he cannot help all of them excel in the approaching public exams so crucial to their future. He helps them over the line to the minimum grade they need to carry on in education — some even achieve an A grade. But the frustrating experience inspires the idealistic young teacher to set off on a global quest. He wants to find the magic formula for teaching and learning.
在相對貧窮的倫敦沃爾沃斯區的一個教室裏，教師亞歷克斯•比爾德(Alex Beard)正在努力給15歲的學生們解釋莎士比亞戲劇《麥克白》(Macbeth)中的匕首場景。令他痛心的是，他不能幫助所有學生在即將到來的統考中取得優異成績，而這些考試對他們的未來至關重要。他竭力幫助他們達到及格線，讓他們得以繼續接受教育——有些學生甚至拿到了A。但這段令人沮喪的經歷激發這位理想主義的青年教師開啓一次全球探索。他想要找到教與學的神奇配方。