After Shizuku and Harashima meet Mr. Shu, the youngsters learn this famous chef of Sichuan cuisine has long but retired. What could possibly light the flame in Chef Shu's heart and convince him to stir up one more dish? Shizuku has an inkling that the birthplace of the chef's signature dish, mapo tofu, might be a good place to start! There, he and Harashima encounter gypsum tofu for the first time, and come to a crucial realization: They must find the wine that Mr. Shu's late wife paired with mapo tofu years ago…