A 200-jin powerhouse modern girl, Lin Xue, time-travels and is exiled to Lingnan, forced to spend money to buy Chu Ye, the paralyzed former Duke's God of War. The original owner was petty, extravagant, and even burdened with high-interest debts. Lin Xue awakens the Deep Sea Perspective System, surviving by beachcombing, dyke-pond farming, and ancient sauce-marinating reclamation. She leads the Chu family dependents to counterattack and achieve prosperity, building oyster shell houses and green-brick compounds. Chu Ye's meridians are damaged and his paralyzed legs are hard to heal, so Lin Xue uses seafood folk remedies to rehabilitate him, and the two develop mutual affection while surviving famine and resisting obnoxious relatives. Just as life is flourishing, distant black-clad elite cavalry gallop in, dramatic changes arrive from the capital, and the dormant God of War's grand game of revenge is on the verge of breaking out.