Huey is playing a broken violin in the park when a strange pair, Dallaglio and Christabel, arrive and easily repair the violin. Dalian and Huey are enthralled by Christabel’s beautiful performance. However, Christabel is apparently famous enough to draw a crowd, and Dallaglio quickly takes her away as if to conceal her presence. Huey and Dalian find one of Christabel’s pamphlets at the used bookstore they frequent and learn that she will be holding a recital to play one of the difficult violin sonatas that are known as Phantom Scores. The two of them immediately head to the site of the recital…?!