Once upon a time there lived a princess who never laughed. Gennady Khazanov, Veronika Mavrikievna with Avdotya Nikitichna, Oleg Popov try to cheer her up. But to no avail. And only Petya Ruchkin from the fifth "B", having sat down at the table with food, made Nesmeyana laugh, because it is very funny if a person does not know how to behave at the table.