Bad guys have taken over the good guys' ship/station/what have you, but, unbeknownst to the villains, one or more good guys are hiding out in their midst, engineering their overthrow. At least one air vent 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. This plot can be used as the action for a Bottle Episode. The bad guys may unknowingly have Bruce Wayne Held Hostage. Expect to see at least one Bulletproof Human Shield show up. Examples of Die Hard on an X include: