The annual flood has finally arrived, bringing new prey and new challenges for the big cats. Gordon Buchanan follows the hungry lion mothers as they hunt buffalo; whilst eldest lion cub, Mathata, learns to avoid this formidable prey. Anna Dimitriadis tracks, Mushi, a skinny young cheetah struggling to catch food in the changing landscape. Brad Bestelink is sure Xudum the leopard is pregnant, and looking for a den, but rising flood waters are pushing dangerous male leopards into her territory.

The Big Cats 24/7 team is coming to the end of its time in the Okavango Delta. Brad Bestelink witnesses Xudum the leopard fight to save her newborn cubs. Anna Dimitriadis finds a brave cheetah thriving in the heart of lion territory. While Vianet Djenguet tracks lioness mum, Tsebe, as she risks her life to feed her five cubs. As the lion pride continues to grow, becoming the largest in Africa, competition for food leads to chaos and infighting. Could this pride's success also be it downfall?