Never in a million years would it have crossed Zach Rylar's mind that his eighty-year-old grandfather is secretly a ninja master. Zach is in even more disbelief when his grandfather asks him to be his student.A significant threat is rising in Zach's hometown- the elusive Scorpion gang. For Zach to be ready to face them, the sixteen-year-old must work harder than ever and master his sensei's teachings. However, once Zach becomes the Gray Ninja, he starts to realize that what he is getting into isn't as simple as "good vs. evil." Rise of the Gray Ninja is an action-adventure novel that follows a teenager's journey of becoming a crime-fighting ninja and his struggle for hope in his life.