It's time for the reckless guy Simion Cook to join the army. Having joined the airborne troops under the command of petty officer Petro Golovko, who is not indifferent to music, who organizes the vocal trio "Sineva", named after the initial letters of its participants: Moldovan Simeon, Armenian...
The artificial brain Sig, created under the guidance of Professor Yavorovsky, disappeared in one of the research institutes. Meanwhile, strange phenomena are happening in the city: all the zoo animals have been released from their cages, and the books in the city's book depository have been mixed...
