The shinobi receive a mysterious message delivered by arrow from an unknown, and potentially deadly, assailiant who lurks in the shadows. The letter lures them to an empty spa resort, where they'll begin a trial like they've never faced before. But first, it's time for everyone to have a squirt gun fight in skimpy swimsuits!
Don't be out too late!
Bleib nicht zu lange weg.
No te quedes fuera muy tarde.
No estés por ahí hasta tarde.
Ne rentre pas trop tard.
Non tornare troppo tardi!
Não fique até tarde na rua.
Только не задерживайся допоздна!