At the heart of the Autarkic system of Auriande, mysterious celestial objects have just crashed on a young planet called Acora. Under the seal of Vijā Saati, the secret Universal Alliance, Jaadhur and his companions are mandated there. Their mission: to make contact with an order based in a city-monastery lost in the mountains. The harsh conditions of the autarkic protocol in force on Acora will make the trip more perilous. From the deep forests to the valleys of ice, passing through the deserts... the three agents of Vijā Saati will be put to the test. But they are not the only ones trying to reach the city-monastery... A terrible threat pursues them in the shadows...