On an unknown planet there is a secret organization called the Institute “Among the Stars”. The employees of this institute are symbiotes. Human consciousness is united with the spark of a cosmic ancient species. People call them Cathars. Cooperation between people and Qatar brings knowledge to the former and new ideas to the latter. Six young people are sent to study at a space academy on the planet Donum. They still can’t imagine what getting to know each other will mean for them. Do they realize that danger and adventure await them? Do they know that a secret will be revealed to them? What the Cathars know will be revealed to them only after the inevitable test, which will grant them membership in the secret organization “Among the Stars.”