Yuha princess of the avian fiends is forced to flee when an unknown force attacks her people. Forced by her sister to use their ancestor's contingency plan, she is sent to another world to escape the horrifying foe that was assaulting her people. She finds herself in the land of silver sky where the sky is sealed in metal the suns are godlike beasts and a massive wall of light that reaches to the sky that none know what is beyond. Yuha must uncover the secrets of the land and herself to reunite with her people.