This art film is a puppet animation. Elementary school student Ma Xiaohu does everything carelessly. For instance, when working on his art assignment, he designed a small car named "Ba Ba, Wu," but not only did he draw the wheels as big duck eggs, he also signed his name as "Little Careless." Because he tossed things around haphazardly, Ma Xiaohu couldn't find his pencil case, shoes, and other items when it was time for school. Just as he was at his wit's end, all these items gathered together and mocked him mercilessly. Ma Xiaohu felt life was quite dull and dreamed of going to the Land of Carelessness. And sure enough, there was a Land of Carelessness waiting for him. Driving his "Ba Ba, Wu" to the Land of Carelessness, Ma Xiaohu enjoyed a brief moment of triumph. However, he soon tasted the bitter consequences of his carelessness.