In TEKKEN: A Man Called X, a man wakes up with no memories and discovers that his wife has been kidnapped. Determined to save her, he uses his martial arts skills to track down the culprits and uncover his own past.

In a dystopian future, a group of fighters compete in the Tekken tournament, which is a fight to the death. One of the participants seeks revenge against the evil corporation responsible for his mother's death. As the tournament progresses, secrets are revealed and alliances forged.