Aces in Orbit chronicles the excitement and energy Andy Pettitte and Roger Clemens brought to the Astros, pushing the organization to its first World Series and the first World Series in the state of Texas. It chronicles the last two historic seasons, beginning with the sensitive negotiations that led Pettitte and then Clemens to Houston before the 2004 season. It details the overwhelming expectations that almost buried the 2004 Astros, prompting the firing of manager Jimy Williams before a 36-10 finish put the Astros in the World Series with the best finish in baseball in over 50 years. The book also chronicles the disappointing departures of 2004 postseason and regular-season stars Jeff Kent and Carlos Beltran, who bolted via free agency and left the 2005 Astros seemingly with no hope. Many experts and even several of the players assumed the Astros would finish near the bottom of the standings, especially after All-Star Lance Berkman missed the first month of the season