Bruce McDill leaves a secure job at the hydro-cycle factory in Milwaukee to seek adventure on the magna lines that span the globe and are powered by magnetism. He works as a spanner tech for RAM Magna, tightening the ever-loosening knuckle nuts on the pylons along the rail line and ends up leading a crew of techs along the line in Wyoming, Idaho and Montana. The crew adopt the name "The Blue Dragons" from the coat-of-arms of Ingolstadt, a city in Bavaria that is the hometown of the only female member, Britta Bayer, who Bruce is enamored of. In his spare time Bruce travels the globe with an Indian friend named Three Dogs, who is also known as Roger Robertson, the Director of Tourism at the hot springs in Thermopolis, near the camp where the railroad workers live on the Wind River reservation.
Bruce learns of the death of an old friend who also worked along the line, and he sets out to investigate. With the assistance of his workmates, he discovers that the elite Elliptical Guard, whose job is to provide security for the more advanced Elliptical Rail Service, is secretly training recruits at the abandoned nuclear facility in Hanover, Washington and he solicits the help of Shining Star, the chief of the Reservation Police at Wind River, to find out what's going on and who was involved in the death of his old friend. He and his crew, along with Three Dogs and Shining Star discover that the Guard is plotting to take over the lucrative security contract for the magna facility in Panama, a major cargo hub for RAM Magna. Bruce accepts a position in the Magna Police Force and together with Three Dogs goes to Panama to hunt down the rogue guardsmen responsible for the murder of his friend and together they bring the perpetrators to justice.