When a train bound for Oslo disappears, then reappears and crashes 3km from its tracks, Botan Negoro, a high-school girl trained by her ninja grandfather to save the world, is called in to recover the crystal fragment said to have caused the accident.
--If you cannot do this,
you cannot save the world!
--That you're a descendent
of the Negoro ninjas,
إذا لم تتمكني من فعل هذا فلن --
!تستطيعي إنقاذ العالم
،وعن أنك سليلة نينجا النيغورو--