In ancient China, Zhu Yanzhi, a young woman from a prominent family, disguises herself as a man to attend a prestigious martial arts school. There, she befriends her fellow student, Liang Shanbo, who is unaware of her true identity. As they train together and form a deep bond, Yanzhi finds herself falling in love with Shanbo. Despite their growing feelings, she struggles to maintain her disguise while adhering to her family's expectations and societal norms. Their friendship develops rapidly, but Yanzhi's complex situation becomes increasingly difficult to manage.

Tensions rise as Yanzhi's family arranges a marriage for her with a wealthy suitor, Ma Wencai, completely unaware of her life as a student and her feelings for Shanbo. Caught between her duty to her family and her love for Shanbo, Yanzhi's life becomes a whirlwind of emotions and conflicts. With every passing day, the possibility of her secret being discovered looms larger, bringing her closer to a significant confrontation that will define her future.