The Princess in the Birdcage Kingdom (劇場版 ツバサ･クロニクル 鳥カゴの国の姫君 Gekijōban Tsubasa Kuronikuru Torikago no Kuni no Himegimi), officially Tsubasa Reservoir Chronicle the Movie: The Princess in the Birdcage Kingdom, is an animated short film based on the Tsubasa: Reservoir Chronicle manga by Clamp. It was adapted by the animation studio Production I.G and premiered in Japanese theaters on August 20, 2005 in conjunction with xxxHolic: A Midsummer Night's Dream, another Production I.G animated film. Set between the two seasons of the anime series Tsubasa by Bee Train, the film continues Syaoran's group's journey to find Sakura's "feathers" (memories) in different worlds. On the journey they arrive at the Country of Birdcages, which contains one of Sakura's feathers.