在这部忍者动画片中,世界各地に侵略を続ける軍事国家、カブスによって滅ぼされてしまった国、ビャクロ。国が滅びる間際にまだ幼かった姫を連れて逃げ延びた忍者たちがいた。それから十数年が過ぎ、カブス打倒のためにひそかに修行を積んでいたサクラたちは昇段試験のためにビャクロ城にある巻物を盗み出そうとする。その頃、カブスの忍者軍団も行動を開始し…。
During Japan's feudal era, there is a war between two ninja clans: the Byakuro and the Kabusu. Then, one night, the Kabusu stage a fierce attack on the Byakuro castle in hopes of kidnapping the clan's infant princess. Their mission is foiled when a loyal ninja of the Byakuro flees the attack with the princess and disappears, eventually raising her to be a ninja. Several years later, six ninja trainees are given a mission to infiltrate the Kabusu-occupied Byakuro castle and retrieve a sacred scroll to complete their training. But their skills are put to the test when they encounter three members of the Kabusu, who use dark sorcery in an attempt to once again capture the princess - who happens to be one of the trainees. (From Anime News Network)
