The Nohara family gets framed by a criminal organization and spends the entire movie choosing yakiniku over survival. That's the whole joke, and it never stops being funny because Shin-chan's priorities are exactly yours. The movie strips away everything except the core formula: chaos, stupidity, and a kid too honest to care about consequences.
The Nohara family has one simple goal: enjoy an extravagant yakiniku dinner. That plan crumbles when a shadowy organization called Sweet Boys frames them for crimes they didn't commit, turning them into wanted fugitives overnight. Now they're running from relentless pursuers while their stomachs growl in protest. Shinnosuke and crew face an impossible choice: keep fleeing and starve, or confront the mastermind behind their troubles directly. They learn that Sweet Boys' mysterious boss operates out of Atami, a resort city where hot springs and crime syndicates apparently coexist. The family decides to hunt down this villain themselves, not out of heroism, but pure desperation for that promised meal. What follows is gloriously ridiculous chaos. Shin-chan's shameless antics, the family's complete lack of survival instincts, and their unwavering commitment to barbecue create a comedy that doesn't overthink itself. This film strips away pretense and leans fully into slapstick absurdity, capturing the spirit that made the TV series work: sometimes the funniest stories are just five idiots doing stupid things in pursuit of something stupid.