Ten-year old Sakura Kinomoto is an athletic girl in middle school. She finds a strange book, named the Clow Book, in her father's study. She finds the Clow Cards inside. She learns the cards are magical, accidentally setting them free when she calls the name of the Windy Card. The book's guardian, Kero, gives Sakura the task of finding and capturing the cards, using the Clow Wand to seal them in their card forms. Sakura is helped by her best friend Tomoyo Daidouji, who designs Sakura's battle costumes and records her adventures on a video camera. Sakura meets Syaoran Li, a boy of her age and a relative of the Clow Cards' creator Clow Reed. Syaoran wants to capture the cards himself, becoming Sakura's rival, though they later become friends. The two capture all of the cards between them, but have to face the second guardian of the Clow Cards, Yue, to decide who will become the new master of the cards. Yue is revealed to be the true form of Yukito Tsukishiro, the friend of Sakura's older brother Toya. Sakura defeats Yue and becomes the new owner of the Clow Cards.