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!
And whichever team
has the last girl standing wins.
Das Team mit dem letzten Mädchen
hat gewonnen.
El equipo con la última en pie ganará.
El equipo con la última en pie ganará.
et la dernière en jeu
fait gagner son équipe.
E l'ultima ragazza rimasta decreterà 
la vittoria del proprio team.
E o time com a última
menina vestida vence.
Побеждает команда,
чья девушка останется последней.