Alice is dismayed when one day the leaves on the old oak tree start to fall. Although she can't save the tree, Alice remembers something that gives her hope: the acorns she collected when the tree was still healthy.
艾莉絲好愛農場上那棵靠近馬路的老橡樹。這棵樹卻在春天的某一天變黃掉了，大家努力搶救，橡樹仍然漸漸枯死了，艾莉絲以為老橡樹會一直在那里，就像天空和草原，就像爸爸和媽媽一樣。最后，艾莉絲放棄了，直到她想起一樣東西，才讓她重燃希望。這是一本教育孩子學習面對“失去”與“珍惜”的好書。

《爺爺的墻》的作者和繪者，你的心情隨著那棵漸漸枯萎的大樹起伏。