Cuando Sakura es poseída por la sombra, Shirou arriesga su propio cuerpo y mente para salvarla deteniendo el Santo Grial contaminado, enfrentándose a su ahora corrompido Servant Saber en el proceso. Aliados con el sacerdote rebelde Kirei Kotomine, su compañero competidor Illyasviel von Einzbern y el servant Rider desplazado de Sakura, Shirou y Rin entran en una carrera contrarreloj para rescatar a Sakura de la locura y poner fin a la Guerra del Santo Grial de una vez por todas, antes de que el Grial corrupto pueda provocar. El fin del mundo.
Third-grader Himeno moves to a huge mansion in the country. However, she soon finds out it's a ninja house! The ninjas Akamaki, Aomaki, and Kiiromaki mistake Himeno for a princess and begin solving problems for her with their own unique skills. But that is not the full extent of their powers! When Aomaki and Kiiromaki combine, they form Midorimaki. Similarly, when Akamaki and Aomaki combine, they form Murasakimaki; and when Akamaki and Kiiromaki combine, they form Daidaimaki. Life with these colorful ninjas has only begun when they discover a large tornado heading for the mansion. What will happen to Himeno's family? Can the colorful ninjas protect Himeno?
