While working in Afghanistan, Soviet journalist Aleksei Rusanov witnesses the spread of a strange disease. He manages to find out that the carriers of the dangerous virus are mosquitoes of a previously unknown species. Aleksei goes to Sindabad and penetrates the secret laboratory of Professor Neli, whose work on the elimination of deadly insects is funded by the CIA...

The movie almanac is dedicated to athletes. Three short stories ("Through the Mountain Forest", "The Top", The Force of Gravity") tell about mutual help, friendship, public duty and the formation of the character of a real person.