Crayon Shin-chan Movie 21: Bakauma! B-Kyuu Gourmet Survival Battle!!

Synopsis

The Kasukabe Defense Forces—Shinnosuke, Kazama-kun, Nene-chan, Masao-kun, and Bo-chan—set out for the "B-class Gourmet Carnival" in Kasukabe without their parents' knowledge, hoping to sample the delicious yakisoba sauce made by "Sauce's Ken." Along the way, a mysterious woman entrusts them with delivering a legendary sauce to Sauce's Ken. They lose their way and become stranded in the mountains. At the same time, the "A-class Gourmet Organization," which seeks to eradicate B-class gourmet foods, attempts to steal the sauce from the group.