The story takes place in Japan, apparently where Syaoran and Sakura live. Syaoran and Sakura were in Clamp's very popular anime "Cardcaptors." However in this story, they are different. Sakura is a princess and Syaoran is her childhood friend. They met long ago, and won't admit yet to each other that they could possibly have fallen in love. But a last confession, suddenly takes a sudden turn of events and Sakura ends up losing her memory. To save her, Syaoran bargains their relationship to bring her back, and must journey to many worlds with companions to retrieve her wings (tsubasa) that have taken flight. No matter how painful it might be.