When Aric Ward discovers a wounded royal guard hidden in a dark cave, his life takes an unexpected turn. Suddenly bestowed with the enigmatic ability known as "Key's Touch," he becomes the target of the royal guard for undisclosed reasons. Follow Aric and his newfound companions as they embark on a quest to unveil the secrets behind his newfound power and the king's inscrutable interest in it!

In a world where the lands are ruled by monsters, and mankind has taken to the skies to find shelter, a young boy by the name of Dexter "Dex" Brownsend dreams of becoming the hero to reconquer the lands below the clouds. With the help of his best friend Ceille, a robot created by his parents, Dex sets out to do just that!

A young angel named Masato accidentally travels too close to the edge of the forbidden lands and loses his wings, falling to Earth. Stranded on a new planet, Masato must navigate the mortal world with the help of new friends he meets along the way. However, returning home to the heavens is not going to be easy, as an ancient war between the divine and the corrupted has resulted in the gates between the heavens and the mortal world being closed. Masato must now find a way to overcome the obstacles and return home, all while uncovering the truth about the ongoing war and his role in it.