Lin Chen is doing business away from home. Under the pretext of treating her mother-in-law's illness, Su Qing defrauded eighty thousand of marital property in three years, secretly transferring it to her younger brother to squander on buying a car and a house. She also abused the elderly woman by stopping her special medicine and forcing her to eat moldy steamed buns. Realizing this, Lin Chen remains calm, joins hands with a lawyer to gather evidence, exposes it publicly at a family banquet, and forms an evidentiary closed loop with bank statements, surveillance, and IOU counterfeits. In the end, Su Qing leaves with nothing, and Su Qiang is legally forced to return the ill-gotten gains. Lin Chen takes his mother to a new home, devotes himself to public welfare elderly care, and completes revenge and redemption.