There comes a point in every young pony's life where they desire something new and wild. Scootaloo is at that point in her life. No longer a filly, but not quite a mare; she begins to wonder if there is anything exciting out there for her. A trip to Manehatten only fuels this desire and a wrong turn one day helps her fulfill it.
Unfortunately these experiences don't always end up becoming fond memories. In fact, sometimes they can lead to some rather dangerous situations. However, in the right light maybe that's what we all want after all.
(AU tag for aged up CMC)