Song Wei, the legitimate eldest grandson of the secluded Song family, is ordered by his master to descend the mountain to undergo the mortal world trial. Endowed with peerless martial arts and medical skills, he is accustomed to acting like a pig to eat a tiger. On his very first day down the mountain, due to a yogurt "attack," he gets into a feud with Su Qingyan, the eldest daughter of the Yuncheng Su family, and through a twist of fate signs an indentured contract to become her personal bodyguard. Thinking it was just working to pay off a debt, he instead gets successively entangled in a feng shui maze, the conspiracy of the Xuanin Sect, and the martial arts bride-matching contest of the Shangjing Long family. From curing all kinds of defiance to beating up Xuanin wicked cultivators with his fists, Song Wei levels up all the way through face-slaps, incidentally turning the cold-faced female CEO Su Qingyan into his own mortal world entanglement. On the day the Xuanin Sect is annihilated, Song Wei's cultivation breaks through realms, and his mortal world trial is fulfilled.