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.

Albina's life changes in an instant: under threat of arrest, her oligarch husband leaves her, taking all the money with him. All that remains of the spouse are two children and a Russian factory on the verge of bankruptcy. Now Albina is forced to forget about the luxurious life in a London mansion and remember what she was told in business courses. Just to start life from scratch in a provincial town without a penny in her pocket, no one taught her.

故事讲述了一位父亲施梅廖夫在得知妻子的出轨行为后，决定带着12岁的儿子独自生活。为了增加离婚时获得孩子抚养权的机会，他走上了成为优秀父亲的道路--加入班级家长会。在那里，他遇到了他以前的同学斯维塔·苏尔科娃，二十年来她变化很大。她从一个单调的书呆子变成了一个坚定而自信的女人，坚定地领导着家长委员会的妈妈们，她甚至被学校校长所敬畏。她是唯一没有改变的特征是——她不喜欢施梅廖夫，因为在童年时期施梅廖夫总是捉弄她。为了留在家长会中，他必须找到与苏尔科娃和其他母亲的共同点……