Incomparable martial artist Qin Guan obeys his master's order to descend the mountain, arriving at the Nan family in Qingzhou with a marriage contract. Expecting merely to complete a task, amidst everyone's disdain and humiliation, he mistakenly marries the terminally ill eldest young lady of the Nan family, Nan Rou. After marrying in, he discovers that Nan Rou has long been oppressed and plagued by cold poison, so he fiercely protects his wife and establishes his authority on the spot, not only curing Nan Rou but also repeatedly smashing the Nan family's and outsiders' contempt for him with absolute military might.