Years ago, near the beginning of its long journey, Voyager made contact with a brilliant Romulan scientist whose present was Voyager 's past. Now Telek R'Mor communicates with Janeway again -- to warn her of a dire plot to capture Voyager and turn its "future" technology against the Federation of yesterday. But more than just the timeline is at stake. Voyager itself may be carrying a menace deadly to all creation!