From headachy Hares to Weasles with measles, Doctor Concocter's patients include every kind of symptom. When the kindly doctor is summoned to Africa, to cure the Hippo-babies who are 'sick as sick can be', he immediately sets forth on a difficult journey in search of the pale Limpopo River where the sick Hippos are languishing. With the help of a Wolf, a Whale and an eagle, Doctor Concocter reaches his destination and sets about curing not only the Hippos but all the other animals and birds in need of his care...