The legendary Klingon hero, Kor, seeks a military command through the help of Worf. To Worf's surprise, Martok refuses to grant Kor a command due to a personal grudge. Nevertheless, Worf appoints Kor as third officer on Martok's ship, the Ch'Tang. The crew has a reverent admiration for Kor, while Martok remains angered at the presence of Kor. Kor is given a chance to prove his command ability when Martok and Worf are injured during a battle with the Jem'Hadar. Kor hallucinates that he is fighting the Federation and nearly causes the loss of the ship and its crew. Kor is now viewed by Martok and crew as a confused, crazy old man. With the Ch'Tang on the brink of destruction, Worf prepares to sacrifice himself to save everyone else. Kor, seizing the moment to become an honorable hero once again, knocks Worf unconscious and succeeds in holding off the Jem'Hadar in an unlikely attack.
Meanwhile back on Deep Space Nine, Quark and Jake Sisko believe Ezri is interested in a relationship with Worf. Concerned that Ezri and Worf are not right for each other, Quark is relieved that Ezri is uninterested in Worf afterall. Overall, this episode is a great Klingon story that fits nicely in the war-torn Season 7. It is one of the better Klingon stories of the series. It combines nostalgia and modern Trek and is excellent Klingon-lore from the past, bringing Kor from the calmer, contained "Original Series" and placing him into the heat of battle in "Deep Space Nine". In this storyline, it is difficult to not sympathize with the aging Kor, who's having flashbacks, being mocked, feeling uselss. Kor's flashbacks allow fans of "The Original Series" to recall the same nostalgic memories of the Federation and Klingon Empire being cold enemies of the 23rd century. Through Kor, we learn that we need to appreciate the fruits of youth while we are young. As a bonus, the episode also has a light-hearted subplot surrounding Quark, Jake Sisko, and Ezri Dax.