After discovering that her father, a talented weaponsmith, is destined to die while supplying weapons to a hero’s party, a girl decides to change his fate by deliberately sabotaging his business. She makes his weapons seem useless and even denies knowing him whenever warriors come looking for him.

Her plan works perfectly, and her father’s shop is soon deserted. Believing she has successfully saved his life, she looks forward to living peacefully with him.

However, just when everything seems to be going according to plan, the most powerful duke in the empire suddenly claims that she is his granddaughter.

Now, she has no idea what is happening or how this unexpected revelation will change her life.