Ron Cross, the mysterious 'Ten-Time Champion' who once dominated the underground fighting scene across the United States, went into hiding for many years after his father was brutally murdered. After being released from prison, he willingly took a job as a handyman at Frank's Fighting Club, secretly investigating his father's killer. The Rossetti family sent people to challenge the club, seriously injuring its members and forcing the manager, Irene, to sign a life-or-death contract. Seeing Irene's life hanging by a thread, Ron could no longer hold back and swept away his powerful foes, discovering clues about his father's murderer from the scorpion tattoo on the enemy. To uncover the truth, Ron broke into the underground black-fist arena and defeated the lone wolf who had participated in his father’s murder years ago, only to be targeted by the hidden forces trying to silence him. Ron then entered the New York Fighting Championship, challenging the Rossetti family directly. In the face of fierce attacks, secret poisoning, and bribery, he fought his way through, ultimately exposing the Rossetti family's criminal evidence during a live broadcast and forcing the mastermind Lorenzo to confess to his crimes. Ron defeated Lorenzo and assisted the FBI in bringing the entire criminal organization to justice, clearing his father's name. He finally let go of his hatred and began a new life with Irene by his side.
