While working in the station's ore processing unit, O'Brien and Jake accidentally activate an automated Cardassian security program, which traps the pair and Sisko in the room. Throughout the station, monitors display an old message from Gul Dukat warning of a Bajoran 'worker revolt' in the unit. Dax tries to beam out the three, but the computer requests an access code, which the Cardassians never revealed when they abandoned the station years ago. Jake crawls through a pipe and opens the hatch to the ore chute, allowing Sisko and O'Brien to get out just as lethal neurocine gas is released. Dukat's image reappears, announcing that the 'workers' have escaped, after which the doors to Ops all slam shut.