In this episode, the Deep Space Nine crew, aboard the Defiant, answers a call for help from a stranded Starfleet officer; meanwhile, back at the station, the bartender Quark attempts to distract security chief Odo so that he can conduct a smuggling operation.
[2] The crew of the Defiant receive a distress call from Captain Lisa Cusak, a Starfleet officer stranded on an alien world by herself, after her ship, the Olympia, has been destroyed.
After establishing communication with her, they discover that the planet she is stranded on has a high concentration of carbon dioxide in the atmosphere, which will eventually kill her without regular doses of "triox" medication, and her supplies of it are running low.
Captain Sisko confides in her that he is uncomfortable having his girlfriend Kasidy Yates aboard the Defiant; Cusak advises him against mixing his professional and personal life.
Sisko orders them to collect Cusak's body and gives her a proper burial back on Deep Space Nine as a Starfleet officer and trusted friend.