Sakura and the Wonderful Teacher

On her way home from school, Sakura meets a mysterious woman. At school, this woman, Kaho Mizuki, is introduced as the class' substitute maths teacher. Syaoran becomes suspicious of Ms. Mizuki, who he senses has strong magical powers. While at the local shrine, Sakura and her friends are trapped within the walls of the Maze Card. They are unable to escape, and Meiling is separated from the others.