由由是个圆眼睛、圆脑袋、长着一只圆鼻头的小姑娘。由由爱幻想，手脚闲不住，就常常惹出点小麻烦：强迫母鸡生蛋，把爸爸的鞋放进冰箱里，弄丢妈妈的项链，错把陌生人当小偷......这些小麻烦令人哭笑不得。(Youyou is a little girl with big round eyes, a round head and a round nose. She is so fond of fantasizing that she couldn't stay still for a minute and often causes minor troubles: forcing a hen to lay eggs, putting her father's shoes into the fridge, losing her mother's necklace, mistaking the stranger as a thief... All these little complications are both funny and annoying. )