Logan and Jessica have lived on Argos, the fabled Sanctuary, a space station in orbit about Mars, for four years, along with three thousand other Runners. They have a two-year-old son named Jaq. On Earth, Ballard's escape line for Runners at Cape Steinbeck is discovered and destroyed by Deep Sleep operatives. Ballard escapes to Crazy Horse Mountain and sabotages the Thinker complex buried in the catacombs below the statue. Although he is killed in the explosion, he succeeds in destroying the computer network and making the world free.
With Ballard's death, supply ships to Argos cease. For six more years, the Runners there hang on, until there are less than a few dozen of them. They have no more food, and plague is running rampant. They draw straws—a handful will return to Earth. Logan, Jessica and Jaq are among those chosen. Logan and family settle with a group called the Wilderness People along the Potomac River in Washington D. C. Life is tough—learning to farm is not easy—but good until Jaq falls deathly ill. Logan sneaks back into the Angeles Complex to get medicine for his son. While he is gone, an insane pack of devilstick-riding Borgia gypsies murders Jaq and kidnaps Jessica. Logan finds himself on the run again, this time to save his wife, and to avenge his murdered child. As the story unfolds, he meets blind mystics who live on the rusted shell of the Golden Gate Bridge, he travels to the New York Complex, and finally back to Crazy Horse Mountain where he discovers the Thinker is being reactivated by Gant, a former DS man, one who passionately hates Logan for his part in destroying his world. Gant has purchased Jessica from the gypsies to lure Logan into a trap. Mary Mary, a young woman, who as a "Cub" met Logan and Jessica on their earlier run, helps them defeat Gant's plan to reenslave mankind.
Logan still has his Gun in this novel, which is a retcon by Nolan as he lost it at the end of the previous novel when it went "wild" (sounded an alarm when Logan's palm flower went black). In this book, Logan has the Gun in a box. In the third novel in the series, Logan's Search, Nolan addresses this apparent continuity error as Logan muses about how he obtained and altered another Sandman's gun after joining the Wilderness People, to deactivate its identity sensing technology, which is described as an exacting and delicate process, meaning that the Gun he uses in Logan's World is not his original Gun.
Gant is described as the head of the Angeles complex when Logan runs. This is four years before the fall of the cities, so Gant is at most 17, a year out of DS training, so quite young to have that responsibility. Evans 9 is one of Logan's childhood friends so at most would have been a couple of years younger than Logan, if not the same age, so Evans must have run also, so it's unclear why Gant would also not be as angry as Evans for being another Sandman runner.