Triple bill of wildlife documentaries focusing on big cats. In 'Into the Lion's Den' zoologist Dave Salmoni examines lions from within a pride to better understand them and attempts to become integrated into their society. In 'Amba the Russian Tiger' wildlife cameraman Gordon Buchanan travels to Ussuriland in Eastern Russia hoping to find the Russian tiger. Finally, in 'White Lions - King of Kings', two sets of white lions are transferred from South Africa to Australia's Mogo Zoo, in an effort to secure the future of the species.