Qin Yu travels through the Warring States Period and encounters the incognito First Emperor in Mount Tai. Using the chess game as a guide, he becomes the master of the Qin Dynasty. When he revealed the whereabouts of the snare and killed the assassin with a snap of his fingers, Qin Shihuang was completely convinced. This national master who possesses the secret skill of "playing the soul" will assist the First Emperor to create an unprecedented empire.