On the Kyushu Continent, immortal sects stand everywhere and demons run rampant. The young Ye Chen was born with blocked meridians and was regarded by the world as a good-for-nothing. He kept to the city streets, working in a blacksmith's shop and relying on his gravely ill younger sister for company.
To save his sister, he ventured into the deadly Blackwind Cliff, where he stumbled upon the inheritance of the ancient Sword Immortal, the Green Lotus Sword Immortal. He awakened the Chaos Sword Meridian and mastered the Green Lotus Sword Song.
From then on, the young man took up his sword and entered the martial world, slaying demons and vanquishing evil, repaying kindness and settling grudges to his heart's content.
He coveted neither the power and status of the immortal sects nor the empty promise of immortality. He upheld only the chivalry in his heart.
Along the way, he encountered saintesses of immortal sects, prodigies of the demon race, and overlords of the demonic path. With a single sword of ordinary iron, he defeated all the world's heroes and uncovered the long-buried secrets of the ancient war between immortals.
When the apocalypse descended and all the gods and Buddhas across the heavens retreated, only one sword remained, cleaving through the darkness of ages.
"I have a sword that can slay demons, vanquish fiends, and protect all living beings!"
In the end, he attained the Sword Immortal's path as a mortal. He founded no immortal sect and claimed no divine title, but roamed freely through the Three Realms with only a sword and a friend, becoming the carefree Sword Immortal whose name would endure for ages.
"I possess a sword that can slay demons, vanquish evil spirits, and protect all living beings!"