Episode Title:High Flying Hippo.Episode Description:Hannah the overweight hippo is not looking where she is going and falls down a mountain. Fortunately, she lands on a ledge. A pair of eagles spot her, summon the Doctor, and they help him up onto the ledge to treat Hannah. The ingenious Doctor contrives a makeshift balloon for getting them all off the crumbling mountain, but as they are about to go, Hannah loses her nerve. Can George and the grasshoppers inspire her?