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2 Jul 31st, 2017 at 8:08AMHero (and party) have entered a strange and exotic city. The plot needs to advance and so they get into trouble almost immediately with the authorities/local henchmen over something idiotic. It does not have to be fantasy, it can also be the police in Terminator 1 immediately going after Reese for stealing pants from a homeless dude.
Well, I don't know. They're not captured on purpose unless it's the script writer's purpose that's being a bit too obvious. But I'm not sure Ca't get away with nuthin' covers it either: It's not about consequences or actual misbehaviour. It's simply that short turn of events that happens when the hero(es) have entered an exotic city. First episode of BBC's Atlantis for example.