Kyiv is under the rule of the Bolsheviks, Europe is recovering from the Great War, Egypt's cabarets are luxuriating with nightlife, and Herr Friedrich leaves his pupils a will - a riddle that will lead them to the treasure. In order to fulfill the last will of the named father, the former pupils of the "Artemis" shelter gather again as a group and set off on a dangerous and adventurous voyage through the Mediterranean Sea. Each of them has their own experience of the war ...
The year is 1907. A fight breaks out in one of the Kyiv theaters. A respectable Austrian gentleman publicly accuses a boy messenger of theft. Without a shadow of fear, the teenager rejects the accusation, not yet suspecting that this is the first exam, a pass to a new life. After all, under a green cap, an elderly Austrian Herr Friedrich saw not only a disguised girl, but also a potential pupil for his orphanage - the secret school Artemis", where professional spies are train...
