Now

In the final days of the mighty Korean Kingdom of Goguryeo, a solitary warrior wrought unimaginable devastation across the land using Sa Shin Mu, an unprecedented martial art. When peace was unexpectedly restored, rumors circulated that this fearsome fighter had been slain by his own younger brother, who was said to be the first and only person to truly master the technique. Yet, just as abruptly as Sa Shin Mu had emerged, both the ultimate warrior and all knowledge of his art vanished without a trace. Two decades after the fall of Goguryeo, whispers have begun to spread of a secret manual containing this legendary martial art resurfacing. Once again, the fate of a new era may hinge upon the power of Sa Shin Mu.