External predatory intelligence (the Calamarain) versus the Enterprise and Q: an alien plasma/tachyon intelligence targets Q and the ship, producing cascading system failures and forcing tactical, ethical, and rescue choices.

The Enterprise detects an amorphous cloud of energetic plasma whose internal patterns read as highly organized; the ship's computer declares it intelligent but cannot translate its signals. Picard orders contact …

On the Enterprise bridge Picard reluctantly orders Shuttle One beamed home, but the Calamarain's proximity cripples every conventional option. The transporter cannot lock, shields report as "frozen," and tractor controls …

An omnipotent member of the Continuum (Q2) materializes in the shuttle to confront a newly mortal Q. Q2 reveals he has been watching and, reluctantly admitting that Q committed a …