One little girl has a very special friend, the tall ancient tree in her backyard. Through the seasons, she grows along with the tree, playing in its branches and basking in its shade. She can swing and have a picnic, draw the tree and play hide and go seek. Through her time with her tree, the girl learns to appreciate the natural world as something to be savored and protected and acknowledges her place within it. The Growing Hearts series celebrates the milestones of a toddler's emotional development, from conquering fears and expressing feelings to welcoming a new sibling.