In the ancient times, Guyana was ruled by tribes of dangerous cannibals. Kai, the wise chief of the Patamona tribe, decided to sacrifice his life to save the lives of his men. According to the legend, Kai’s soul now resides in a cave behind a magnificent waterfall, where it still guards his people. The director takes us behind the 225-metre Kaieteur Fall in Guyana – one of the most powerful waterfalls in the world.