The secretive realm of the world's deadliest ninja warriors is thrown into chaos as one by one, ninja clan leaders are brutally assassinated! What fiendish foe has the power to kill the most dangerous men in the world? To avenge their dead leader, three ninjas must face this hidden enemy. They'll need all their stealth and ninja trickery to survive!

Ce synopsis est en anglais : nous ne l'avons pas encore traduit.