Sakura Kinomoto is not an ordinary 4 years old girl from elementary school, since a few months she became the Card Captor. Further to an excursion in the library of his father, Fujitaka Kinomoto, Sakura fell on a strange book, once opened, a small stuffed animal went out of it: Kero. This small lion is the protective guard of the book who contains the Clow Cards, cards possessing incredible magic powers. Then, Sakura and Kero fast realize that there is no more cards in the book what can have a terrible consequence: a plague could affect the world!! In the meantime, the cards are free and take advantage of it to bother the human beings. Sakura and Kero go out of the house at night in order to hunt the cards and lock them back into the book. In every fight, the Card Captor obtains the power of the creature which it captured and thus is going to become more and more powerful in spite of its young age. She is accompanied in her adventure by Tomoyo Daidoji, a classmate fan of Sakura and who takes essentially care with sewing her magnificent costumes and with filming her exploits in the dark night.
Know that this manga of CLAMP had an enormous success in Japan during its publication, Card Captor Sakura is an excellent manga of humor and relaxation which I recommend you, and more every volume was accompanied by Clow Cards serving as bookmark in the original version. Good initiative!