The year is 2385 and three Starfleet vessels have disappeared in the Gamma Quadrant.

Fearing a resurgence of Dominion hostilities, Starfleet calls upon one of its most experienced captains to resume command. Put in charge of the USS Challenger, Captain Max Phillips must assemble a new crew while investigating the disappearance of the Starfleet vessels.

As the new crew of the USS Challenger prepares for the next phase of their ongoing mission they must overcome the memories of a war gone and the foreboding future at hand ...

(Set after Star Trek Chronicles: Book III)

Donald Sandhurst has become one with the Amon, and in the aftermath of his defection and Ramirez’s assault on Europa, Operation Vanguard threatens to unravel. New leadership arrives in the Delta Quadrant with the goal of shaking up the status quo as waves of refugees threaten to overwhelm the task force’s meager resources. Can Pava Lar’ragos, wounded body and soul, rally Europa’s crew to continue the mission in the captain’s absence?