Sakura and Shaoran and a Sea of Sand

Sakura's class is doing the play Sleeping Beauty where she is playing the Prince and Shaoran is the Princess. The two of them are nervous about playing the lead roles, and the roles opposite from each other. Tomoyo decides that she wants to make the costumes, especially Sakura's. The two of them decide to come into school early the next day so that they can practice their lines together and alone. On the way to school, Sakura feels like a spirit is following her. The two of them arrive at school, but before they can go inside they are attacked by the Sand Card which threatens to trap them under sand.