Captain’s Log: The Enterprise is exploring a region that might be viable for colonization when Data detects a signal from a Class-M moon orbiting the fourth planet of the system. In case it’s a distress signal, they head over. Riker, Worf, and Crusher beam down to find a downed Borg ship and one life sign—an injured Borg drone. There’s no indication of any other Borg activity—at least not yet. There are four other drones, all dead.
Picard’s initial instinct is to leave as quickly as possible (as soon as Riker says the word “Borg,” he becomes apprehensive to say the least), but Crusher can’t just leave a dying person behind. Picard agrees, having the drone beamed to a detention cell. Crusher will work on him there, and La Forge sets up a subspace field so the drone can’t communicate with the rest of the collective.