The military general Wei Zheng is stationed at the border of another world incognito. On the surface, he pretends to be an uneducated market merchant. He relies on the routine of pretending to be a pig and eating a tiger to deal with various forces. He secretly delivers key information through the border trade channels. He repeatedly breaks the situation in the turbulent spy war situation of the other world. He gradually uncovers the conspiracy of the enemy agents hidden under the trade routes and maintains the stable defense line of the border.
