PROLOGUE:
Kinomoto Sakura is a 12-year-old sixth grade girl who has a very important role in this world. Two years earlier, she was discovered to have magical powers when she opened a mysterious book which contains magical cards known as Clow Cards. Cerberus, the Beast of Seal and one of the Guardian of Clow Cards, chooses Sakura to become a Cardcaptor since she let the cards flee and are now scattered throughout the city. It was Sakura's responsibility to find all of them, using the magic provided to her.
During the search of the cards, Sakura mostly wears different costumes designed by her best friend, Daidouji Tomoyo. She always capture Sakura's different encounters with her video camera. Tomoyo was always known as a kind-hearted and a caring person, mostly to Sakura.
Li Syaoran, a boy in the same age as Sakura arrives to Japan from Hongkong in search of the Clow Cards. At first, he was a very difficult and strong rival of Sakura, but as they grew closer together, Syaoran has now developed an elementary crush and soon true love for her. He also contains magical powers but not based on the Clow Cards. He has spells for himself that summon Thunder, Wind, Fire and Water, which seldom help both himself and Sakura during a battle.
Sakura was having different dreams almost every night, which bothers her intensely. She dreams about the future, which Cerberus described as 'premonitions'. She has dreamt about her fight with the Clow Cards in the Last Judgement, about a powerful teacher named Mizuki Kaho, also about the arrival of Syaoran and the arrival of Yue.
Yue is the second Beast of the Seal aside from Cerberus. As Cerberus rules the sun, Yue rules the moon. After Sakura opened the mysterious book, Yue has taken the form of Tsukishiro Yukito, a classmate of Sakura's brother. He appeared in the Last Judgement wherein he is to decide if Sakura is deserving to be the Mistress of the Clow Cards. He therefore proved Sakura's worth, and then chooses her to be the new Mistress. He and Cerberus served for her, in the same time as being Yukito.
Mizuki Kaho was first known as Sakura's normal homeroom teacher. Even though she has a calm and charming appeal, Syaoran was able to sense her magic, but was unable to tell if good or not. At the Final Judgement, Mizuki helped Sakura from Yue by using Clow Reed's bell to wake Sakura from a dream. The bell belongs to Clow Reed, the creator of Clow Cards, but now has the possession of Hiragizawa Eriol.
Many knew about Clow Reed's death, including Cerberus and Yue, but nobody knew that he has reincarnated. His reincarnation was Hiragizawa Eriol, a boy the same age as Sakura and attends the same school. Now Sakura has passed the Final Judgement, she has obtained a new wand, which unknown to her has a different spell than the old one. Eriol made her realize and discover it, by doing such different magic tricks that even endangered her life. But Eriol's real mission is for Sakura to transform all Clow Cards into Sakura Cards, since Sakura is now the new Mistress and has a new Sealing Rod. She changes different cards battle by battle, which in the end when Eriol has revealed himself, Sakura was able to change all of the cards into Sakura Cards. Eriol has his own beasts and guardians just like Cerberus and Yue: Spinel Sun and Ruby Moon.
Sakura thought everything was back to normal since she has obtained absolute power just like Clow Reed and she has now her own cards, but she never thought she has yet problems. First, she unknowingly created a new card which she named 'The Hope', when she realized she was also in love with Syaoran. 'The Hope' is a sealed card, which was never used in any battle. 'The Hope', after many years, has awaken and decides to take away the cards from Sakura, which she considers her friends. Eriol taught Sakura how to transform 'The Hope' to Sakura Card, but it requires a sacrifice. He says "The one who is most powerful than the card itself will be forced to forget his feelings for the one he cherish the most." At the end, when Sakura was able to change the card into Sakura Card, she thought the card would devour her feelings without even telling Syaoran about it. But instead of her, Syaoran was chosen by the card to devouring his feelings. The truth is his feelings were never taken away, and Sakura was able to tell hers.