The Blue World is a parallel world where martial arts flourish, with a vast territory, nine states, three dynasties, countless sects and aristocratic families. This world is based on spiritual energy, and warriors can temper their bodies, condense their energy, and penetrate the heavens and the earth. But the spiritual energy tide is declining, the world's barriers are getting weaker and weaker, and the extraterrestrial demons are ready to move. The seemingly prosperous world of martial arts actually hides a crisis of annihilation.