On the planet Xinzauriaa, a unique young woman named Yu has been afflicted by a strange illness since childhood. Driven by a desire to understand her origins and the nature of her illness, she embarks on a journey through this fantastic world.

During an event hosted by her town, Yu disturbs the sleep of Kai, a survivor of the most terrible calamity in history. Kai, whose increasingly rare specie resembles a winged lion, has spent countless hours recuperating from his injuries in his ice.

Intrigued by Yu's unique abilities, he decides to accompany her to her journey. Together, they explore the wonders and dangers of Xinzauriaa, seeking answers to the questions that haunt Yu.

Their journey takes them through breathtaking landscapes, encounters with fantastic creatures and challenges that test their courage and determination. As they travel together, will their bond evolve beyond expectations?