Chuck Ramsay and his friend Frank Crane are in the power of Ivan Shark, who is taking them on a secret flight. Meanwhile, Captain Midnight and his friends are doing all they can to get a clue as to Chuck's whereabouts. 

It is now noon on the day following Chuck's disappearance. Captain Midnight, Major Steel and Steve Donovan are seated in the pilot's room of the South West Airline's administration building. They are gathered around a small table, on which is spread out a large map, and they are discussing what their next move will be...