The government doesn't know what to do with all the extradimensional beings, space aliens, and other non-humans running around. They've captured quite a few and locked them up in a massive prison. Fortunately, they have a potential savior, Sparkles the Unicorn. Of course, trusting Sparkles can be dangerous in of itself. A hapless group of prisoners is about to find out what happens when they join Sparkles for an adventure...