Bob Wilson (played by William Shatner) is a salesman on an airplane with his wife for the first time since his nervous breakdown six months prior. As he stares out his window on a a stormy night, he thinks he spots a supposed gremlin on the wing of the plane. But, every time someone else looks out the window, the gremlin always leaps out of view, so nobody believes Bob's seemingly outlandish claim. Bob realizes that his wife is starting to think he needs to go back to the sanitarium, but after he sees the gremlin begin to peel back the metal on the wing he realizes that if nothing is done about the gremlin, it will cause the plane to crash. The flight attendant tries to give Bob sleeping pills, but Bob fakes swallowing them so he can stay up and do something about the gremlin. Bob then ste