When Sisko defends a Karemma ship that has been trading with the Federation without the Dominion's knowledge, a badly damaged Defiant is forced into a dangerous game of cat-and-mouse with two Jem'Hadar ships inside a gas giant.

Klingon Dahar Master Kor, Jadzia Dax, and Worf search a remote planet in the Gamma Quadrant for the fabled Sword of Kahless; the mythical, millennia-old weapon of the Klingon Empire's first leader.