Oleg works as a realtor in a large modern city. He lives in the same apartment with his wife Lena and son Egor, and likes to spend his free time in the company of his mistress Lyali, who regularly supplies him with banned substances. One day Lena leaves town and leaves her son to Oleg. The father makes another drug order and goes to the specified point with his son. Instead of his bookmark, Oleg takes a kilogram of cocaine and, faced with the real owner of the goods, hides from pursuit by car.

Arriving on an excursion to St. Petersburg, classmates Dana and Lyova witness the theft of the famous "Chizhik-Pyzhik". According to legend, if you make a wish and get a coin on the pedestal of the monument without dropping it into the water, it will surely come true. But "Chizhik" is gone. Does this mean that the guys will never be able to realize their dreams and Lyova's parents will still get divorced, and Dana will not become a famous blogger? Courageous schoolchildren rush in search of kidnappers, hiding from teachers, parents urgently summoned from Yekaterinburg, policemen and even from themselves.... "Peter the Great".