In the book Un Gamusino en la  Terminal you will meet Lieutenant Kepax, an inhabitant of the distant planet Gamma in the fifth galaxy, who descends in his spaceship to an earthly airport. To avoid attracting attention, he uses his abilities to transform himself into an Earth child of about nine years old. Adopting this new appearance, he explores both the air and ground areas of the airport, marveling at the runways, taxiways, emergency vehicles and various facilities for security and commerce.

During his tour, he befriends people who work at this "big airplane station", who provide him with information about the operation and activities of the place. Throughout this experience, Kepax embarks on a host of exciting adventures, offering children the opportunity to join him as he explores and discovers airports and the people who make them work.