The afterlife of Klingon belief, where warriors who die with honour join Kahless and the heroes of the past to fight and feast for eternity.
Sto-vo-kor is the reward every Klingon warrior hopes for. Entry is earned by death in battle or in the performance of a great deed, and it may also be won for the dead by the actions of those they leave behind. Those who die without honour go instead to Gre'thor.
The belief runs through the Klingon stories of The Next Generation and above all Deep Space Nine. In Image in the Sand and Shadows and Symbols, Worf is tormented by the thought that Jadzia Dax, who did not die in battle, may be shut out of Sto-vo-kor.
With Martok, Bashir, O'Brien and Quark he undertakes a dangerous mission to destroy the Dominion shipyards at Monac IV and dedicates the victory to her. In Once More Unto the Breach, the old warrior Kor seeks one last battle for the same reason.