The focus is on the father of the family who becomes unemployed. As a result, his children have to move in with their grandmother in a small provincial town. Masha is used to a wealthy city life and an elite school in Rublyovka. It's not surprising that she finds it difficult to adapt to completely different conditions. Her classmates, led by the rebel Christina, perceive the Moscow girl as a threat. They are determined to make Masha's life a living hell, and they succeed.