Satler Bashir, an up and coming purveyor of the Aerospace Engineering field, learned of the Universal Primate Captivity Crisis from activists attending Venatici State Biotechnical Institute of Medicine and joined the expedition to free the captive primates of Earth. Having been raised up in the Zealot caste of the Apskellion Space Apes, Satler fled to find purpose with the more empathetic Doctors, eventually joining the expedition to free the primates of Earth. Now, as their mission takes them to Earth, Satler and the Doctors seek to confront the Homo Insipiens for their failure to free their captive primates as they had promised to do so long ago.