Sakura starts the 5th grade on a high note with a beautiful new teacher, Kaho, and a precious birthday gift from Yukito. However, the Clow Cards make sure to remind her that she still has her duty as Cardcaptor in addition to her school-work. The Snow Card's storm, the Voice Card's theft of Tomoyo's voice, and the Lock Card's attack on her school field trip, are just a few of the problems she has to deal with. Not an easy task when she's home sick with a high fever, but without Sakura, how can the Cloud Card be captured?