Documented in television documentaries for over 40 years by the BBC and other broadcasters around the world, the Marsh Pride is the most filmed pride of lions on Earth. In this film, the Marsh Pride battle for survival in Kenya's famous Maasai Mara Reserve, which has become a magnet for tourists, many of them keen to see the pride for themselves. A tale of shifting loyalties, bloody takeovers and sheer resilience, the lions’ story is told by those who filmed them, tried to protect them and lived alongside them, as well as some who ultimately wanted them dead.