So guys, Tsubasa Chronicle: Tori Kago no Kuni no Himegimi show us when Sakura, Sayoran, Fay and Kurogane arrived in a new world called Land of BirdCage, there they discovered that people and birds have a good relationship, everybody has one bird, in this new place they have to fight against the King of Land of Birdcage, and save this world and Tomoyo-Hime. you can call this movie as a OVA because it is so short. ^^