Zhang Guiying from Kaoshantun in Northeast China is extremely frugal, always believing that saving is earning. She constantly eats spoiled leftovers and directly uses fertilizer bags and picked-up old bowls. Her daughter-in-law Su Qing understands food safety and repeatedly dissuades her, but her husband and father-in-law favor the mother-in-law. Pesticide bowls intensify the conflict, and Su Qing and her husband set up a fake death and a fake trial to wake her up. Zhang Guiying is stubborn on the outside while quietly discarding toxic utensils, until she gets poisoned from eating old salted vegetables and is sent to the hospital, finally coming to her senses. The mother-in-law and daughter-in-law reconcile, opening the Guiying Safe Kitchen, making life solid and bright.