Have you ever been to St. Petersburg? Excuse me, in another St. Petersburg? Where can you chat with Pushkin and Peter I or ride the breeze on a golden-winged griffin? Surely not, because only a select few go there - creators and their creations who are capable of living forever. But the inhabitants of this world urgently needed the help of ordinary people. And the young ballerina Masha, going on an excursion to the Hermitage, does not suspect that she will soon have to meet the talking cat Vaska, walk around the city in the company of Alexander Pushkin, visit the Winter Palace, take part in a naval battle on the cruiser Aurora... The future of St. Petersburg depends now from Masha - from her ability to dance, courage and intelligence.