After losing his family, a violent, reckless samurai finds himself shipwrecked on a desolate island with no outlet for his pent-up rage. With nothing but regrets to keep him company, he ponders his existence and embarks on a punishing spiritual journey to quiet his turbulent mind, but the demons within are too strong and he is ready to give up. When he is captured by a murderous tribe of cannibals, reality hits hard and awakens every survival instinct within. As he escapes, his mastery of the blade is tested like never before and he enacts a brutal revenge on his captors and their vicious leader.