Armando’s Circus is in town. It’s this important event that sets of the scene for part 4 of the franchise, Conquest of the Planet of the Apes. When Cornelius & Zira arrive back on earth to much fanfare around the world they had a child they called Milo. In a fortuitous event the performing ape at Armando’s Circus also had a child. Just before the government shot them dead Zira had swapped babies with the performing ape leaving Armando to secretly raise the talking ape child.