Admiral Haynes has been waiting worriedly for word on the Lensmen's mission to learn the secrets of the Boskone. Then he hears that their ship, the Britannia, has been spotted, and his hopes rise. However, he loses contact when the Britannia jumps into hyperspace.
While the chase continues, and with no further knowledge of it whereabouts, Haynes makes a bold move and orders an assault on the Boskone at Radelix, an assault which will coincide with Kim and Bill's efforts and eventually lead to a successful liberation.
As the fleet regroups and tries to determine the next move, a sudden power surge surrounds the fleet and eventually gives coordinates. Kim, fighting Helmuth, has transmitted the location of the Devil Planet through this surge, and the fleet quickly moves to stop the Boskone once and for all.