The sisters are thinking about how to teach Dad a lesson, but Sonya is already working hard on this issue. She introduces Venik to Nikita, whose image, manners and level of intelligence shock his father. He doesn't believe that Sonya is really dating a guy, but decides to play along with her, not imagining how far the high school student is ready to go. Arina plunges into the world of fairy-tale literature to find out who stepmothers are and how dangerous they are for little girls.

Lisa becomes a victim of an insidious fraudster who faked Lyudmila Mikhailovna's voice and sent an audio message on her behalf. An unknown person embezzles the money collected by the whole class for the tour. Now the headman will have to give up the honorary post, as well as return the stolen goods. Arina breaks the ban and decides to sit at Dad's laptop. A glass of juice accidentally spills onto the keyboard, and the girl has to urgently save the situation before the Broom notices anything.