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!
Then the girls from Hanzo Academy—
Dann sind die Mädchen von der Hanzo …
Entonces, las de la Academia Hanzo…
Entonces, las de la Academia Hanzo…
Alors celles de Hanzô…
Allora le ragazze dell'accademia Hanzo—
Então as meninas da escola Hanzou...
Значит, девушки из Хандзо...