Previous Story:
Helena is the illegitimate daughter of Fame Douglas and a world class suprano singer. Fame Douglas was the organiser of the first "DOA World Tournament". He was later assassinated by Bayman. Once while performing at the opera house, someone trying to shoot her, but instead killed her mother. While investigating who is the killer, she felt that the murder of her parents is somehow related to the organiser of the second "DOA World Tournament".

DOA3 Story:
Whether she likes it or not, Helena is dragged into the intertwined conspiracies within the huge DOATEC organisation as the only living relative of Fame Douglas, the founder of DOATEC. Captured at last by the anti-Douglas faction of DOATEC, Donovan challenges her to win in the "DOA3 World Tournament". If she really wants the truth, she has no choice but to fight.