Esme loves trees. She lives at Number 8 with her parrot, Captain P. Jay and his dad live at Number 8 too. Esme is often away on international trips protecting trees on different continents. Every time she comes back, she gives Jay a souvenir - a snow globe. When Esme and Captain P are traveling, the snow globes change and show Jay where they are. Jay can always see that they are safe. One night, Jay is asleep after having had a bad accident in the snow. A snow globe falls to the floor, and he wakes up suddenly to find Captain P in his room. Captain P takes Jay to the scene in the snow globe, and it becomes clear that Esme needs Jay's help to protect her special tree.