"Portrait of a frightened man: Mr. Robert Wilson, thirty-seven, husband, father, and salesman on sick leave. Mr. Wilson has just been discharged from a sanitarium where he spent the last six months recovering from a nervous breakdown, the onset of which took place on an evening not dissimilar to this one, on an airliner very much like the one in which Mr. Wilson is about to be flown home - the difference being that, on that evening half a year ago, Mr. Wilson's flight was terminated by the onslaught of his mental breakdown. Tonight, he's travelling all the way to his appointed destination which, contrary to Mr. Wilson's plans, happens to be in the darkest corner of the Twilight Zone."
Mr. Wilson sees a creature on the wing of his airplane, but no one believes him. Seeing that the creature is about to destroy the engine, he takes a sleeping policeman's gun, opens a hatch, and empties the gun into the creature. It is hit and gets swept off the wing. Mr. Wilson is taken off the plane in a straitjacket, convinced that he saved the plane."The flight of Mr. Robert Wilson has ended now, a flight not only from point A to point B, but also from the fear of recurring mental breakdown. Mr. Wilson has that fear no longer, though, for the moment, he is, as he has said, alone in this assurance. Happily, his conviction will not remain isolated too much longer, for happily, tangible manifestation is very often left as evidence of trespass, even from so intangible a quarter as the Twilight Zone."