Luo Yinyou, a woman from modern Earth, dies in a traffic accident after a life marked by abandonment, bullying, and poverty. Upon death, she is reborn in a fantasy world but is immediately sealed with the Dragon Seal of Ten Hells and thrown from a height of one hundred thousand meters. The system reconstructs her body, saving her life, but the ten black nails remain embedded in her spine and skull, suppressing her souls and severing her reincarnation. She lands in a snowy battlefield between Bei You Country and Han Liao Country, where she is found by Ye Ci, the masked Grand General of the Evernight Legion. Ye Ci, known for his terrifying combat prowess and reclusive nature, initially intends to discard the child but keeps her after she accidentally tears his rare Featherlight Dark Robe. Luo Yinyou quickly realizes she possesses a system that converts emotional fluctuations in others into points, which she needs to accumulate to eventually remove the deadly seal.
Ye Ci removes one Soul Suppressing Nail, revealing that doing so costs him ten years of his lifespan, though Luo Yinyou suspects he is lying to frighten her. She adopts the persona of his daughter, calling him Daddy to gain points, and displays inhuman physical strength and durability. After being abandoned by Ye Ci during a military maneuver, she wanders into enemy territory and encounters the Han Liao heavy cavalry. Using the system's autopilot feature, she spends the night tying the hooves of five thousand enemy warhorses with her own hair, crippling the enemy force before the upcoming battle. This act of sabotage allows Ye Ci’s Evernight Legion to annihilate the Han Liao army with minimal resistance, as the enemy is left without mounts.
Luo Yinyou returns to the Evernight Fortress, a massive city carved into the mountains, where she accidentally causes a fire that destroys a general’s residence. Despite her chaotic behavior, Ye Ci keeps her under his protection, and she is given the title of Little General. The story establishes the ongoing conflict between the two empires, with Ye Ci’s legion serving as the bulwark against Han Liao’s invasions. Luo Yinyou continues to navigate this dangerous world, using her system to gather points while hiding her true origins and the severity of her seal. Her relationship with Ye Ci remains complex, marked by his indifference and her relentless pursuit of survival and power in a world where she is viewed as either a curiosity or a potential threat.
