In his previous life, Lin Mu was the top assassin on Earth. He accidentally traversed to the Eternal Immortal Realm, where, over the span of eight hundred years, he cultivated from an ordinary mortal to the realm of an Immortal Emperor.

However, as he was undergoing the tribulation to become an Immortal Emperor, his enemies ambushed him and his Divine Soul drifted through the cosmic Chaos for several hundred years. Now he possesses a body which belongs to another man also named Lin Mu, a live-in son-in-law of the Qin Family in River City who was constantly mocked and humiliated.

"Rest assured," Lin Mu mutters. "Since I have taken your body, I will naturally avenge you."