In a near-future world torn apart by frequent school shootings, society is divided between the Globalists, who want unity, global uniformity and peace, and the Segmentists, who fight for individual freedom and expression. Amidst this chaos, a group of academics studying an ancient Amazonian tribe is mysteriously killed, sparking a series of deaths among top linguists and scientists.
Professor Neel Dutta is plunged into investigating these murders linked to Neo-Esperanto, a primordial perceptive language that could enhance human communication. With his ex-girlfriend and fellow academic, Devin Jones, they must outsmart deadly assassins, unravel the Mertongue Project's secrets and confront the enigmatic Thanatos across continents to prevent a global catastrophe while confronting their own pasts and the dark secrets of those they once trusted.