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".

Your desires must be treated with caution. Romka, Yarik, Nikoletta and Yelisey made their own wishes at the magic tree in the Artek camp. The tree took them 30 years ago - to 1988, where they meet their parents, who then also rested in Artek. Now the guys need to make friends with their parents and, acting together, find a way back to the future.