Leon has a stubborn and independent character, like all the men in Courtney's family. Having quarreled with his father, he left home; Having enlisted in the army, he violated the order of the commander... The military court acquitted him, but now Leon’s record includes a “big black blot”, and his uncle, Colonel Ballantyne, invites him to start a new career in British military intelligence. At the beginning of the 20th century, Germany, which had extensive colonies in East Africa, strengthened its military power and, according to some reports, was preparing for war, so British intelligence agencies increased surveillance of the border areas. Leon, an excellent hunter and great friend of the Maasai tribe, is entrusted with collecting information about the movements of people and equipment near the border. He goes undercover as a safari organizer for high-ranking Germans. Soon, Count Otto von Mirbach, a famous industrialist, whose factories build airplanes and cars for the Kaiser's army, comes to Africa to hunt. But Mirbach's target is not only big game. Leon penetrates into his plan at a moment when he has nowhere to look for help and no one to ask for advice. A big hunt begins, in which the pursuer and the hunted can suddenly change roles...Courtney and Ballantyne - in one cycle about the magnificent and formidable Africa!