Osiris Praesto, an up and coming purveyor of the Chemistry field, learned of the Universal Primate Captivity Crisis from activists attending The Hall of The Holy Pulsar and joined the expedition to free the captive primates of Earth. A child of the Zealot caste of Apskellion Space Apes, Osiris was left behind in a conflict with the Doctors and was taken into their care and raised as one of their own, but waits for the day that they can break free and return to their own people. Now, with the native primates still in captivity on Earth, Osiris and the Doctors venture to fulfill the promise of release that the Homo Insipiens have reneged.