4-01: The Way of the Warrior, Part I
When a Gowron-lead fleet of Klingon attack ships arrives at DS9, Sisko calls in a familiar Klingon expert for reinforcement.
4-02: The Way of the Warrior, Part II
DS9 is center ground as the Klingon conflict intensifies. Gowron tries to persuade Worf and the Defiant rescues a Cardassian convey carrying Gul Dukat.
4-08: The Sword of Kahless
Worf and Jadzie set out with the legendary Kor to find the ancient bat'leth of Kahless.
4-21: For The Cause
Sisko's loyalties are tested when his girlfriend, Kassidy Yates, is an accused Maquis collaborator.