The story follows a mischievous 14-year-old girl whose attitude towards learning changes dramatically under the influence of her passionate and unconventional teacher, Mr. Kaplan. He engages students with interactive lessons about history, prioritizing imagination and experience over traditional methods, which ultimately leads to his dismissal for not adhering to the curriculum. Despite the protests from students and parents, Mr. Kaplan's teaching leaves a lasting impact, culminating in a heartfelt farewell as he moves on to a new school.