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.
4-06: Starship Down
Upon rescuing an alien ship, The Defiant is badly crippled by the Jem'Hadar and becomes trapped in a gas atmosphere.
4-03: The Visitor
When a freak accident traps Sisko in a time paradox, only re-appearing every few years, Jake spends the remainder of his life trying to save him.
4-25: Broken Link
When Odo is struck with an unknown illness, Sisko seeks help from The Founders, who enact a punishment against Odo for harming another Changeling.