With Columbia’s help, the Enterprise crew grapples with sabotage to their ship as they pursue the truth behind the kidnapping of Phlox.

While Enterprise visits Earth for the launch of Columbia, Phlox is kidnapped and forced to help the Klingons deal with a grave threat toward their species.

Once the NX-01 finally returns to Earth, the weary crewmen face repercussions of their journeys, both positive and negative.