Flopsy, Mopsy, and Cottontail want to visit their friends on the Big Mountain, but a grumpy lion guards the path. He demands a grand present to let them pass. After rejecting a cake and meat, the bunnies offer to build a cozy den for the lion. The lion accepts, and together they create a wonderful home, turning the lion from grumpy to happy. The bunnies, now free to pass, joyfully continue their journey to see their friends.