The two protagonists were descendants of the Momen in their previous lives. They were betrayed by their cronies in a lonely border city and died. After rebirth, one hundred thousand cavalry coincided with the situation. As the last descendants of Momen, they were weak and in an isolated city with limited resources, and faced military oppression from the enemy. However, relying on their past life memories and knowledge of Momen, they used the empty city as bait to set up a killing array. However, the betrayal in their previous life made them wary of those around them, and after repelling the enemy, once the identity of the descendant of Momen is exposed, it may trigger a pursuit by all parties. They must complete the defense arrangement in a short period of time, not only to retreat from the enemy, but also to hide their identity, reverse the situation in many difficulties, protect the isolated city, and embark on the road of revenge and breaking the situation.
