To protect her family, Jiang Zhiyu disguises herself as a man and enlists in the army in place of her spoiled older brother. She survives countless brushes with death on the border and earns outstanding military merit. But when she returns home victorious, she discovers that her parents have already arranged for her cousin, Gu Qingqing, to marry her childhood sweetheart, Pei Qingyan, in her place. Her cousin is already five months pregnant. Far from feeling guilty, her family joins forces to pressure her into surrendering her military achievements to her brother and demands that she enter the Pei household as a concubine. Heartbroken, Jiang Zhiyu has already made her plans. She reveals her true identity to the emperor in person and is officially bestowed the title of Young Vanguard General. She immediately severs ties with the Jiang family. From then on, she rises through the ranks on the strength of her military achievements, establishes a women's military camp to break the shackles imposed on women, refuses to be constrained by romantic love, and protects the realm with her own strength, living for herself.