In ancient times, the demon race rampaged across the land, leaving devastation wherever it went. Humanity lived in constant fear of being ruled by them, until one day an ancestor of the human race took up a flying sword and struck down a great demon, sparking a war between humans and demons. The war lasted for thousands of years. In the end, humanity emerged victorious and became the master of the Nine Continents, while the demons gradually faded from people's sight.
In a village called Jianyun, a boy holds a wooden sword and vows to become a peerless sword immortal.
