Synopsis

Janggeum, a student from Hyeminseo, travels to the front lines, claiming she wants to assist the army with medical help despite being a child. The Grand Prince vouches for her, though he makes her return home. The army then divides into front, middle, and rear lines with the Grand Prince leading a reserve corps. Meanwhile, adversaries discuss taking the Grand Prince's wife hostage, while the messenger who was sending letter from the front lines to their families was targeted.