Sakura Kinomoto is starting junior high school alongside her friends, including her boyfriend Syaoran, who had just returned to Tomoeda. After having a prophetic dream about a mysterious cloaked figure, all of the Sakura Cards turn blank and are rendered completely powerless, thus starting her quest to find out what is wrong. In doing so, Sakura and her friends, along with her guardians and protectors Cerberus and Yue, discover and capture the transparent cards, using the new and much stronger mystical dream key. Eriol, Spinel Sun and Ruby Moon appear as supporting characters, as does Kaho Mizuki, having returned to England, but continuing to aid Sakura and her protectors from afar. Sakura ends up befriending a transfer student named Akiho Shinomoto and meets her butler and guardian Yuna D. Kaito, from whom Syaoran detects vast amounts of magical power.