The heroine is reborn at the critical moment when she is poisoned during her hairpin ceremony. After binding herself to a System, she completes its missions and continually unlocks a range of miraculous skills and items. She first wanders the martial world, using modern knowledge and the System's support to put a gang of swindlers in order and punish corrupt merchants and the leader of an evil cult. Later, she returns to the imperial court and uses the abilities granted by the System to cure the emperor, earning the title “Goddess Who Protects the Nation.” As she contends with villains such as the crown prince and powerful ministers, she gradually exposes their schemes and avenges her former self and her family.
