The animals of the Savannah grasslands of Africa are worried - a drought is coming. The signs are unmistakable. The wise king of the forest, Gambo the lion, knows what to do. There is fertile land in rural Isoba, where the animals will have plenty to eat and drink. It is there they head and must make their new home. But the journey to Isoba is fraught with difficulties and dangers, so Gambo gives strict instructions to his friends to follow on their way. But will they listen to their king's wise advice?