Nocturne Knights.

The Yin and Yang of the universe are in motion. The dark side, the "Black Heavenly Path," seeks to devour all things. Ancient humans and spirit beasts worked together to create Transforming Battle Armor to seal it away. Now, the Yun Group, bewitched by the Black Heavenly Path, is developing belts and creating new spirits. The son of the White Tiger of the Holy Domain, transforms into a Black Cat and dons the "Armor of Dark Night".