In the late years of the Republic of China, foreign invaders invaded, the empire was in turmoil, and the storm was like a storm.
Two young brothers who graduated from the special intelligence training camp of the orthodox military academy were ordered to lurk in the occupied area in the face of danger.
Surrounded by external enemies and alienated from relatives at home, the challenges they have to face are too great. And the enemy that suddenly appeared was incredibly powerful. Can they find a glimmer of hope in such darkness?
"By taking this promise from you, I will keep it for the rest of my life."