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!
Since we don't know
who sent the invitation,
Solange wir nicht wissen,
wer der Feind ist,
Como no sabemos quién la envió,
Como no sabemos quién la envió,
Nous y avons répondu volontairement
afin de savoir qui est notre ennemi.
Dal momento che non lo sappiamo,
Já que não sabemos quem
mandou os convites,
Так как отправитель неизвестен,