In this establishing episode of the series Karl's pilot's licence is suspended because of a delay in undergoing a medical test. Reluctantly, he hires a 28-year-old Kate Ashcroft (Susan Hogan) to substitute for him temporarily. When she proves her skills by avoiding a mid-air accident, what looks like a fiery relationship becomes a long-standing one. Doctor Crawford suspends Karl Ritter's flying licence for health reasons. Ritter runs a domestic airline service in a small district. When Kate is appointed to be Ritter's pilot, he is reluctant although she proves to be competent in her job.