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!
It doesn't matter how dangerous it is.
Es ist egal, wie gefährlich es ist.
No importa el peligro,
No me preocupa el peligro,
Peu importe le danger.
Non importa quanto lo sia
Não importa o quão perigoso seja.
Пусть опасно, неважно.