Watch Kingdom of the Planet of the Apes for Free: How to Stream the Movie Online at 123Movies. . Several generations following Caesar's reign, apes – now the dominant species – live harmoniously while humans have been reduced to living in the shadows. As a new tyrannical ape leader builds his empire, one young ape undertakes a harrowing journey that will cause him to question all he's known about the past and to make choices that will define a future for apes and humans alike.