Set in the 24th century, the series follows the adventures on Deep Space Nine, a space station located near a stable wormhole between the Alpha and Gamma quadrants of the Milky Way Galaxy, near the planet Bajor, as the Bajorans recover from a brutal decades-long occupation by the imperialistic Cardassians. This episode features guest appearances from two recurring characters from "": Vash (Jennifer Hetrick), a former love interest of Captain Jean-Luc Picard, and the powerful alien trickster Q (John de Lancie). In the episode, Vash arrives at Deep Space Nine after traveling with Q in the Gamma Quadrant for some time, trying to avoid Q and sell artifacts including a mysterious alien crystal. The episode was Hetrick's final performance as Vash, and de Lancie's only appearance as Q on "Deep Space Nine".