Cardcaptor Sakura: Clear Card Arc is set after the events of Cardcaptor Sakura. Following her adventures in the original series, Sakura Kinomoto starts junior high school. All of her cards have been turned to clear cards, which cannot be read and thus their memories are gone. With the help of Syaoran Li and her guardians Tomoyo Daidouji and Kero-chan, Sakura embarks on a new adventure to discover what has happened to the cards.
The story follows Sakura as she discovers new magical powers within herself while trying to uncover the mystery behind the clear cards. Along with her friends, she must find a way to restore them before they cause any more trouble. As she searches for clues, she will also encounter some old enemies as well as some new ones. Throughout her journey, Sakura learns more about friendship and trust as well as discovering who she really is and what it means to be a Cardcaptor.