A family on vacation stops at a roadside restaurant where a gang of criminals are holding the employees hostage. When one of the hostages tries to enlist their help, the family is added to the group. Disagreements on how the hostages should be treated leads to dissent among the criminals, who are awaiting the arrival of their leader. (The leader, for unexplained reasons, has all the stolen money.) Some hostages are killed; when the leader arrives, the hostages overpower them and free themselves.
The hero of an unlikely airplane disaster must overcome his own inadequacies, improbable accidents and his former girlfriend in order to save a space shuttle from destruction in this spoof sequel of the disaster parody Airplane!
Dr. Daniel Challis and Ellie Grimbridge stumble onto a gruesome murder scheme when Ellie's novelty-salesman father, Harry, is killed while in possession of a strange mask made by the Silver Shamrock mask company.
On another planet in the distant past, a Gelfling embarks on a quest to find the missing shard of a magical crystal and restore order to his world, before the grotesque race of Skeksis find and use the crystal for evil.