Enid Blyton 
The Folk of the Faraway Tree 

When Curious Connie comes to stay with Jo, Bessie and Fanny, the three children are keen to introduce her to their magical friends in the Faraway Tree – but Connie doesn’t believe in magic, or fairy-folk, and pours scorn on everything she sees. Even so, they explore a host of lands, including Nursery Rhyme Land, the land of Dame Slap, and climb up the Ladder That Has No Top, but then disaster strikes: The Faraway Tree is dying – its leaves curling up and no fruit growing on its branches. What is wrong with the magical tree, and can it be saved before it’s too late?