A young medical student, by the accidental finding of a strange metal object, becomes aware of a large colony of alien people living on Earth. This knowledge eventually will cause him to be taken to their distant planet where there is a much more scientifically advanced civilization. There he finishes his medical studies and returns to Earth to practice medicine and to assist the aliens to advance Earth civilization to be able to join the vast Galactic Union.

He gets into difficult situations when trying to use his alien medical knowledge at the local hospital.