Dreadnought

Voyager encounters Dreadnought, an advanced, self-aware Cardassian missile also drawn into the Delta Quadrant that B'Elanna Torres reprogrammed during her time in the Maquis. The missile, believing it is still in the Alpha quadrant on its Maquis mission, is on course to destroy Rakosa V, an inhabited world of millions. Now, B'Elanna must outsmart her programming to disarm Dreadnought before it reaches its objective.

Synopsis adapted from TVmaze (CC BY-SA 4.0)