There is a dark power in the galaxy working against the rise of civilisation, and the First Lensman is leading the way in the fight against chaos. By founding the Galactic Patrol, the Lensmen seek to unite the civilised beings of the galaxy and weld a star fleet of such stupendous power that the forces of darkness and chaos will be defeated.

In this sequel to Triplanetary, E.E. Smith continues the epic galaxy-spanning saga and artfully combines political intrigue with mighty space battles and super science.