A powerful and thrilling story of a Czech flying ace, his friends, and their boundless love of flying. Four friends and their aviation mentor fly together and serve in the army for twenty years. But then, after a long time, the death of a former RAF pilot during an attempt to fly to the West begins to unravel, and the main character has no choice but to try to imitate him. "You are a trespasser, follow me," are the words he often reports into the radio when forcing those who are flying west in search of freedom to land. Now he too must attempt the same desperate escape.