Build a movie plot around this: What is stowed away inside a hidden vault? fortune
A:
A group of martial arts and combat masters are invited to a fighting contest, "Dead or Alive", on an isolated island within an advanced complex, with the ultimate prize of $10 million. Among the competitors are Kasumi, a shinobi ninja-princess looking for her brother Hayate (who was competing in the last tournament), Tina, a professional wrestler setting out to prove she has more potential (complicated by her father Bass being one of the contenders), Christie, a master thief and assassin, her treacherous partner Maximillian 'Max' Marsh, and Hayabusa, a friend of Kasumi and Hayate who follows Kasumi to keep her safe, using the invitation to DOA for this. A final competitor is Helena Douglas, daughter of the tournament's late founder. When they arrive, they are monitored by the island's supervisor, Dr. Victor Donovan, who, aided by egghead Weatherby, is gathering data (using injected nano-sensors) from the fights for some mysterious project. To add to the situation, an assassin from Kasumi's colony, named Ayane, has followed Kasumi to kill her and wipe away the disgrace the princess has caused to the clan.The contest plays out, with multiple contestants fighting and being defeated (including Gen Fu, Bayman, Leon, and Zack), until only Kasumi, Christie, Hayabusa and Tina are left, with Helena being defeated by Christie. During the course of the film, Max and Christie form a plan to steal the fortune stowed away inside a hidden vault. During her fight, Christie sees that the key to finding and unlocking the vault is a tattoo on the back of Helena's neck. Meanwhile, Kasumi begins to suspect Donovan of lying about her brother being killed in the previous tournament, and Hayabusa, infiltrating the main facility to find the truth, is captured. She is more than once confronted and nearly killed by Ayane, who Kasumi tries to convince that Hayate is alive (since it is eventually clear that Ayane loves Hayate). Also, Weatherby begins to fall for Helena, and in the end tells her about what he knows of the...