After being possessed by a time‑traveler for three years and suffering endless humiliation, the eldest princess Su Muqing of the Great Xia dynasty regains control of her body. She fiercely settles scores with the evildoers, reinvents herself by slimming down, and publicly denounces the heartless man at her suitor‑selection banquet. Together with her childhood sweetheart Gu Shiyan, she exposes the heinous crimes of Sun Wenyuan and destroys the Sun family. She breaks free from social constraints, promotes equal rights for women, and finally stays with Gu Shiyan, becoming a legendary princess of her generation.