Robert O'Reilly

Sisko refuses Worf's resignation. Deep Space Nine is attacked by a Klingon war fleet.

Picard tries to keep the Federation neutral when the Klingon Empire faces civil war, and Worf struggles with divided loyalties.

Worf must choose between Starfleet and his people when the Klingons withdraw from a peace treaty and start a war involving Deep Space Nine.

Sisko and his crew masquerade as Klingons to expose a Changeling who has incited a war between the Federation and the Klingon empire.

The Klingons join the Federation's fight against the Dominion as Gul Dukat reveals his self-serving allegiance.

While Worf is visiting the Followers of Kahless, who faithfully await the return of the legendary Klingon warrior, Kahless miraculously materialises and claims control of the Klingon empire.