Little Brother wants to follow Big Brother up the branches of the Climbing Tree, but Mom tells him he has to wait until he's older. When he's finally big enough to go up, Little Brother makes a difficult discovery: no matter how high he climbs, Big Brother will always be a branch ahead. In their make-believe world within the tree, the brothersgrow and transform into majestic birds, mountains, and even celestial bodies, yet Little Brother still can't help but feel...lesswhen compared to Big Brother.Will the two ever be able to share the same space?