The protagonists, Feng'er and Fengjiu, are twin girls who have the talent to control thunder and lightning. They are regarded by the tribe as the "Twin Phoenixes" in the prophecy of Shuangfengming. They were born in a world called "Blue Sky Realm". The Blue Sky World became two disconnected worlds due to a catastrophe. In order to find the secret of Tiandie's Heart, Feng'er, Fengjiu and her friends embarked on the path of immortality and embarked on a journey of self-growth. They will face obstacles from hostile forces while making allies along the way. There are many unknown secrets and powers in the blue sky world. Feng'er and Fengjiu need to open their own path to immortality.
