A boy steps in a door and arrives a garden full of sunshine. He plays football happily. He steps in the door again, and this time he comes to a room where he plays piano and does drawings cheerfully... The boy is found at a desk full of books. His father blames him for not finishing his homework and is going to slap his face ...男童踏進一道門,來到一個充滿陽光及快樂的花園,男童在草地上踢球。他再踏進那門,來到一個華麗琴室,男童先雀躍地在彈奏鋼琴,再愉快地在畫圖畫。原來這是一道「通向成功的大門」。男童透過這門參與許多不同活動,愉快地學習…… 男童在堆滿書本的桌子上低下頭,父親進來責備他為何還未完成功課,父親伸開手準備給他一個耳光……