The book tells the story of three smart and good kids who avoid a terrible railway accident, shelter an exiled Russian writer, put out fire on a canal barge, and save a juvenile in a tunnelthey won the respect of all the people with their noble act and they finally cleared grievances of their father with the help of other people. It is a touching story about a beautiful soul and growing in adversity. Generation and generation of people have been accompanied by the legend during their growth. Since published a century ago, it has been translated into dozens of languages and has been adapted for several times into the theater, movies, TV shows and cartoons.
