Lin Qingmeng disguises herself as a useless person to seek revenge for her mother's death, hiding in the Lin family's martial arts hall and secretly practicing her family's martial arts. On the night of the Lantern Festival, she saves the fourth prince of the general's mansion, Li Chengze, but is investigated by him without being exposed. To seize military power for revenge, she participates in the martial arts competition under the alias 'Meng Qing'. After Lin Guangzong's crushing defeat to the expert from Fusang, Lin Qingmeng punches her opponent, revealing her identity on the spot. The second wife, Liu Lanzhi, feels a sudden increase in crisis, and to protect herself and the Liu family trading company, she plots to eliminate Lin Qingmeng before she becomes powerful.
