The boy, Vitya, was voiced in the cartoon by Maria Vinogradova, and his sister Masha by Larisa Pashkova. The animated film was dubbed by such popular actors as Tatiana Peltzer, Anatoliy Papanov, Vyacheslav Nevinniy and others.
Using the example of this tale, it is easy to understand why you need to fulfill your duties and why you can't do only what you want.