In a world of immense floating islands and boundless skies, a young boy named Gran embarks on a journey to uncover the truth about his father's final words. When he encounters the mysterious and powerful girl Lyria, a fugitive from the Erste Empire, his life is irrevocably changed. Together with the talking lizard Vyrn and the skilled knight Katalina, Gran must protect Lyria from those who seek to control her staggering power. This epic fantasy adventure follows their quest across a breathtaking world, where they gather a diverse crew of allies, each with their own compelling motivations. As they navigate the delicate politics of a world on the brink of war, the series blends thrilling aerial combat with heartfelt character moments, exploring themes of friendship, destiny, and the courage to defy an empire. The anime brings the beloved mobile game to life with stunning visuals and a soaring orchestral score, promising an unforgettable journey filled with wonder and peril.