Unimatrix Zero, a cyberspace enclave for certain Borg within the collective, is under threat by the Borg Queen who wants it destroyed at any cost. Meanwhile, with Janeway and her crew going undercover as Borg drones in an attempt to infiltrate the Collective, the Borg Queen gets more and more desperate to unravel the mystery of Unimatrix Zero. She will even resort to the destruction of her own kind in an attempt to stop Janeway and Unimatrix Zero. In a direct confrontation between Voyager and a Borg cube, Voyager is helped by a mysterios Borg sphere. But when Janeway disables Voyager's shield, voyager has no choice but to retreat.
