The story tells the protagonist Sakura Kinomoto, a female student in the fourth grade of elementary school. After returning home one day, she feels that there is no one in the basement study. There are some anomalies. Out of curiosity, Sakura came to the study and saw a book with golden light shining on it. When she opened the book to read, a strong wind blew and the cards in the book flew out
A creature named Kerubelos (Xiao Ke) also rushed out of the book. It turned out that those flying cards It is the Clow card with magic, and Xiao Ke is the guardian beast that guards the Clow card. In order to retrieve the Clow cards and seal them, Xiao Ke gave the sealing stick to Sakura, and helped her seal the scattered Clow cards together. After conquering the Clow cards again and again, Judgment Moon also appeared, and he gave Sakura a new test. Only by passing the new test can Sakura become the new owner of the Clow cards. In the end, Sakura Lived up to expectations and converted the Clow card to the Sakura card.