Eria, an innocent girl, lives alone in the mountains happily, appreciating every passing day. However, the lazy nightmare spirit Akumaru has to find a victim soon before his boss finds out how slack he has been otherwise he’d be turned into a hapless wandering spirit. Spotting Eria, he decided to get it over and done with, attempting to give her some bad dreams.

Lucky for little Eria, Nikki the dream fairy was on her job as usual, cranky about not having anything happening recently and suffering from a lack of pocket money because of that. Of course, she jumps right into action to help out little Eria; she enlists the help of Eria’s favourite toy knight, Altos, in helping her in her duties.