A wealthy young man known as “Abel” flees the revolution in Venezuela around 1840 and embarks on an adventure in the wild, uncharted jungles of Guyana. The jungles are inhabited by lush forests, mountains and rivers that are pristine, untouched. Wild animals never before seen appear within the infinite walls of the “green mansions.” The most magnificent being of all is the beautiful and wild Rima, a young woman who speaks in a strange, lilting language only known to birds and her lost tribe. While Abel’s journey is fraught with peril: gold hunting, warring bands of native tribes, petty rivalries, superstition, and magic, he becomes forever smitten with Rima.