Five years have passed since the events of the first season. The children have grown up, but the life of Sasha and Masha's large and boisterous family has not become any calmer. Younger Max is passionate about conducting scientific experiments, regardless of the comfort of others. Ilya has become an ironic teenager, immersed in online games. Meanwhile, older Timofey, returning home after a year of studying in Germany, brings not only his diploma but also a surprise - his fiancée, Polina. Gradually, it becomes clear that the girl's views and habits clash with the established family dynamics. However, Timofey is determined to get marr...