Plot
The player takes role of the young Iga ninja named Kage ("Shadow") on the mission to rescue Princess Kiri (Kirihime) from the villains Yoshi (Yoshiro Yukikusa) and Yuki (Yukinosuke Kiri). Kage must fight his way through the forest, along the secret passageway, up the fortress wall and through the castle, rescuing her two times (three in the NES version) in order to win the game. Each time the princess is rescued, the seasons change in the game.