Follow a host of remarkable animals surviving in the planet’s hottest, driest deserts. As the flood waters retreat, Dikeledi readies her cubs for escape through enemy territory. When Mother Nature flips her switch, the fish will bite, but at what cost? This time on The Incredible Dr. Pol’s turn to be a patient! Decades of rough riding as a legendary country vet have left Doc with severe arthritis in his right ankle. As the days grow shorter in the Arctic, Alaskans prepare for the harsh battle ahead.