When the Enterprise is advised by a passing Klingon vessel that there is strange debris in orbit around a nearby planet, they investigate only to find a piece of a NASA spacecraft emblazoned with the US flag. The planet below has severe weather and an unbreathable atmosphere except for one small area that appears to be inhabitable by humans. Riker, Data and Worf beam down to the surface only to find a single revolving door leading them to the casino floor in the Hotel Royale. They soon find that they are trapped there and cannot exit. As they explore the hotel, they find the remains of a human, dead for several centuries. They also find his diary and a cheap pulp fiction novel that seems to be the story taking place in the hotel itself.