Capt. William T. Riker's ship, the Luna-class U.S.S. Titan in drydock at Utopia Planitia over Mars short before her maiden voyage and first mission following the events of Star Trek: Nemesis.
Riker is returning to the Titan in the type 11 shuttle Armstrong following his visit to the U.S.S. Enterprise-E docked at McKinley station above Earth, to recruit his new XO.