The first of only a handful of stand-alone episodes, not tied to a particular arc.
While season two had four stand-alone episodes (one between the Pooley and Pinzolo arcs, two between Pinzolo and Newquay, and one after Newquay), and season three had seven (four between Grossett and LeMasters, three between LeMasters and Volchek), this is the only stand-alone episode in season one.