It tells the story of Chibi Maruko, who has an optimistic personality. She followed her father to perform on the streets to make a living since she was a child, and mastered the unique skill of crushing boulders on her chest to walk in the rivers and lakes. A miraculous encounter between Xiaowanzi in the Ruyi Building made the illiterate Xiaowanzi unexpectedly become a well-educated princess, and she married into the Mei Mansion, and married the third young master Mei, changing her life's destiny. In addition, Lu Yingyao, the daughter of the Ninth Prince, got married according to the decree, but she was taken back to the village by the bandit Xiaobao as his wife. There is also the third young master Mei who resists the marriage, putting on a posture of rejecting others thousands of miles away, and wants the princess to take the initiative to withdraw the engagement. And Xiao Maruko, who pretends to be the princess, also dislikes the aloof third young master Mei. In the process of fighting wits and courage with the other party, they become a pair of happy friends and gradually develop feelings for each other. In the end, Xiao Maruko's true identity was revealed to the gang, but it did not affect his relationship with the third young master Mei. He also gathered the power of everyone to eliminate the remnants of the salt gang, so that all lovers could finally get married, spend a full moon, and form a real couple