The document tells a story about a boy who grew up playing under an apple tree as a child but stopped visiting as he got older and busier with work and family responsibilities. When he returned as an old man, the tree had nothing left to offer except comfort, showing how parents will always be there to support their children even when they can no longer provide materially. The moral of the story encourages people not to forget or ignore their parents as they age and instead spend time with them to show gratitude for all they have done.