Complex sentence: Its plot continues the journey from Syaoran's group for Sakura's feathers and they locate one at the Country of Birdcages, where they have to confront the world's king in order to obtain it.
Split into simpler sentences: Its plot continues the journey from Syaoran's group for Sakura's feathers. They locate one at the Country of Birdcages, where they have to confront the world's king in order to obtain it.