In the final stage of the Muromachi period, Rantarou is 1 boy living in Ninja-class family, but he is always determined to become one of the greatest ninja but Rantarou were sighted so he has encountered many obstacles while following the path of the family. In return Rantaro have the ability to run very fast. One day the family decided to send Rantaro to local Ninja school. Here he met many new friends and learned new skills from the ninja teachers. In the learning process, there are some bad ninjas from another school's team challenged Rantaro and his friends. Rantaro accepted the challenge and started the journey to become a Greatest Ninja ever.