Jack was raised in the ancient martial arts tradition of Al Jebre. His family were the hereditary keepers of a series of sacred scrolls, describing a martial art so powerful, that it could actually grant one superhuman powers. Over the centuries the manuscripts were translated and retranslated, and much of the art was lost. The modern scrolls carry but a small fraction of the powers of the original. In fact his family are indistinguishable from most modern San Francisco families, but their secret is about to put them in deadly danger.