Kittens Max, Cantaloupe, and Melon love the Big Tree. In spring, they climb it. In summer, they stargaze on it. In autumn, they play in its leaves. It's always been there. But now the Big Tree is sick. Really sick. And Melon and Cantaloupe's parents have to cut it down. Max is sad to lose the Big Tree, but he's even sadder for his friends. The Big Tree was in their yard for their whole lives--it was their friend. More than anything, Max wants to cheer them up. He thinks about it and thinks about it, and finally it comes to him: with some allowance money, some elbow grease, and a lot of beautiful potted plants, he can help them grow new and beautiful flowers in their sunny backyard!