It's incredible - but the Soviet cosmonaut Tanya Uspannaya visited the Moon and returned to Earth. True, the Russians do not tell anyone about this, since Tanya suddenly disappeared, which means there is no reason for “propaganda hype.” Only behind-the-scenes information about this event leaks to Western intelligence agencies. It is also known that since Tanya’s mother is Chinese, communist China, considering Tanya herself to be its citizen, lays claim to her fame. Sleepy One suddenly turns up in Iran and gives the impression of being insane. She manages to escape everyone and hide somewhere in the desert. The Russians are making a fuss, claiming human rights violations, demanding the return of their subject. The best operative of Section K, Sam Darell, is urgently sent to Iran, which is on the verge of a military coup, with the task of finding a Soviet cosmonaut. Meanwhile, Ta-Po, Durell's sworn enemy and part-time chief of Chinese intelligence, is discovered in Tehran...