Su Jinjin, the master of the God of Wealth Pavilion, adopts a group of orphans and makes a living by taking on various commissions. Someone places an order with a heavy bounty, wanting to get rid of the Jiangnan scholar Gu Nanfeng. Su Jinjin sneaks into a night banquet action, but unexpectedly Gu Nanfeng throws out a million in heavy bounty, and while ensuring his own safety, asks her to investigate the employer behind the scenes. The money-loving female pavilion master and the deep-thinking Gu Nanfeng, from mutual calculation to joint case investigation, uncover the past of her master being harmed five years ago, as well as the heaven-shaking secret behind the memorial tablet and secret seal. When she leaves with her master's ledger, everyone in the capital owes her an old debt.