In the Great Yan Dynasty, the martial world and the imperial court stand side by side. The six great martial sects, the Green Cliff Sword Sect, Heavenly Secrets Pavilion, Hundred Herb Valley, Ironclad Fort, Listening Rain Tower, and Soaring Sky City, govern the martial world together, while the imperial court secretly keeps them in check through the Martial Suppression Bureau. Twenty years ago, the six sects joined forces to destroy the demonic cult, Netherworld Hall. But the cult’s remnants and the long-lost Nine-Turn Heart Art have resurfaced in the martial world. The young heroes will be drawn into a feud spanning two generations and expose the hypocrisy behind the conflict between good and evil.