Bad guys have taken over some location or vehicle, usually holding several hostages and almost always in an enclosed space, but, unbeknownst to the villains, one or more good guys are hiding out in their midst, engineering their overthrow. At least one air vent passageway will be crawled through. At least one hostage will be a member of The Hero's family and another will be executed while trying to negotiate with the villains.
Whether it's on a battleship, a bus, the president's airplane, a piano, or a cell phone, everyone loves a good rip-off with a twist, right?