Tensions rise as a possible Cardassian attack looms, and Picard, Dr. Crusher and Worf are sent on a secret mission to find and destroy suspected biological weapons. The headstrong replacement captain, Edward Jellico, is cold and demanding - to the dismay of the remaining crew. But when Picard is captured by the Cardassians and tortured for information, dismay turns to anger and resistance as Jellico's plans exclude a rescue mission. With his options running out, Picard must fight to save his sanity and ultimately, his life.