St. Petersburg. Friends Lera, Valya, and Olya perform a mystical ritual for fun, when suddenly Catherine the Great herself materializes in the kitchen among the candles. The crowned empress quickly explores the 21st century: she tries cappuccino, searches for the "Carriage" fare in a taxi app, and at night, she brilliantly discovers a dance floor. The friends are delighted, until they notice that reality around them is beginning to change.