Shen Lang, the head of a modern hundred-billion-yuan business empire, unexpectedly dies in a plane crash and is reborn in the Great Chu Dynasty as a disgraced son-in-law who was poisoned by his wife and is lying inside a coffin. Facing humiliation from the Liu family, the previous owner's blood debts, and the schemes of powerful nobles, Shen Lang draws on his business acumen from his previous life. Starting with a single bowl of sugar-roasted chestnuts, he rebuilds a salt-merchant family, controls the flow of capital, and establishes trade routes across the realm. Amid an era of turmoil where political intrigue intertwines with business warfare, he joins forces with the mysterious Su Hanyi, breaks through crises with commercial strategy, shakes the imperial court with his wealth, and ultimately builds his own business empire, transforming the entire dynasty.