Sisko refuses to release a Tzuweri ship because they have stolen a cargo of hallucenogenic devices. The Tzuweri attempt to use their own transporters to separate from DS9, but only succeed in phase-shifting, along with part of the station. Station personnel begin hallucinating as more of the station shifts into parallel space. The Tzuweri mount an assault on Ops, where O'Brien has come up with a plan, while Sisko and Odo recover crewmates from shifted areas of DS9.
