Hiding and enslaved in a future Earth, Caesar, the son of Cornelius and Zira, prepares an uprising against his human captors. As with its predecessors Conquest of the Planet of the Apes explores issues such as xenophobia and cruelty. Certainly the darkest of the series, 'Conquest' is also the the most under-rated. The picture features a slave revolt that was specifically based on footage of the 1965 Watts Riots. The 2011 movie Rise of the Planet of the Apes has the same theme but is not officially a remake of the 1972 movie.