The Merlin Stone, used in one last great spell to sunder the worlds of technology and magic before these conflicting realities destroyed everything, is under Libby Halstead's protection. Now, Sabin and his mother, creatures so evil their memories were taken from the minds of man, have stolen it. She doesn't have many allies—Alex; a man with no memory; Zorovin, a dragon in search of his son; and Sierra, a woman who longs for magic.

What strangeness happens once in a blue moon?

Libby is about to find out.