In this exciting new chapter book series from New York Times-bestselling author Tracey West, a ninja-in-training must use skills he doesn't know he has to defeat a deadly enemy.

When Hiro's family is plagued by a mysterious moon sickness, it's up to him to find a cure. Hiro, Aya, and Yoshi must journey to an ancient monastery to find answers. But along the way, they encounter the bakeneko--magical, shape-shifting cats who pose as Hiro's brothers to confuse and waylay them. To save his family, Hiro must defeat the shadow-stealing bakeneko--and the evil monk who controls them....