Watch HDToday. Following award-winning filmmakers Dereck and Beverly Joubert on their 30-year-long quest to document the behaviour of big cats in Botswana, this film brings together three decades worth of material, including extraordinary footage of hunting lions, scavenging hyenas and stealthy leopards. See firsthand the numerous changes that have led to dramatic decline of the lion population, and what needs to be done in order to ensure their survival