Sveta Vasilkova – my mother’s “Firefly” – moves from a tiny village to the city to study at an elite school. The appearance of a strange newcomer in a red cap, who seems too smiling and naive, immediately changes the usual life of the class. The future elite of society is forced to look at themselves from the outside and find not the best features. Not everyone is ready for this, and a split occurs in the group. In order to somehow return the guy’s attention, the beauty and leader of the company Zhenya decides to reveal the girl’s secret.