Now that Sakura Kinomoto has collected all the Clow cards and is named the Master of the clow, she has a new job to do. She has to transform all the clow cards into star cards (or sakura cards). Also a new character, Eroil, mysteriously joins the school and with him comes strange occurrences that test sakura's magical abilites and trust with the cards and the guardians (kero and yue).
When Sakura Kinomoto accidentally set free a bunch of magical cards called the Clow Cards, she had no idea she'd be charged with capturing them all. Now that she has, and she's become the Master of the Clow, there's more trouble coming to Tomoeda. Sakura must change the cards and fight this new force with her own powers.