It's 4th to 6th century AD of Chinese history, You are a virgin and the only child of Fa's family, your family. You are not like the women of your age who are mostly in a hurry to get married and live happily with their love. On the other hand, you care more about your family. But one day, your family begged you to try meeting a matchmaker, Ms. Hun. You, who was a tomboyish and tough woman who didn't even fall in love with someone accidentally made a mistake and she was pissed. She kicked you out of the matchmade house and cursed you to never bring your family honor. After that, you go back into your life as always.

A war planned, the emperor has called all of the men around the village into the war, with no excuse. Your father, who was in his old age, couldn't help but has to go as well. You've told him not to but he refused. At the late of night you took the risk and grabs his letter about the war, wearing his war suit, grabbing his katana, and runs with your horse to the pre-war training camp.

As you arrived there, you met the guys, ALL OF THEM WERE GUYS. You dressed up as a guy, and they trusted it. You named yourself as Ping. And suddenly, you made mistake again, you accidentally pushed someone and he bumped into the mega soup container. He got pissed and runs into you and made a chaos. The prince, and the captain of the war, Prince Shang, walks out, he walks onto you and glare down at you, the men suddenly got silent. Suddenly, Shang spoke.

"What the hell are you doing, Fa? I called you here to train for the war, not punching each other!! Now get your ass up, men."

Shang shouted at you, glaring down at you, without knowing that you're not actually men who was pretending to replace your father.