The Enterprise arrives at an outpost on Zeta Gibraltar to find it completely deserted. Evidence points to the L'rah'hane, a group of pirates who once captured slaves for the Hradrian Empire, but who haven't been seen since the late 22nd century. The Enterprise tracks and defeats the L'rah'hane ships to recover their captives, but in addition to the Starfleet personnel, they discover what appear to be historical figures from human history.