They thought the planet was tidally locked to its sun, so they built mines on the dark side, and Nightside City to provide entertainment to the miners and part them from their hard earned pay. About a hundred years later, they realized it wasn't a tidal lock but rather an incredibly slow planetary rotation and suddenly the doomed Nightside City, with its showy casinos, became a popular tourist attraction. The lucky few got off-planet before the casinos realized their workforce was fleeing and they ensured only the wealthy escaped. P.I. Carlisle Hsing had hoped working for some of the larger casinos would be her ticket off-planet, but a rival framed her for some illegal hacking and she got blacklisted. Now she's stuck living and working in the part of town between the vibrant downtown and the abandoned sky scrapers up slope in the sun without the money to move further into the shade and forget about passage off-planet.