Chapter 1 : We're introduced to Mike Brennon, a formidable figure in the boxing ring with a reputation for his "cannon-ball" left, "thunderbolt" right, and an unmatched fighting heart. His journey begins in a small Nevada town, where, amidst a carnival, he volunteers to fight "Young Firpo," revealing his exceptional resilience and fighting spirit.

Chapter 2 - Scenting The Kill: Mike's relentless ambition and raw talent catch the eye of Steve Amber, who sees potential in Mike despite his lack of finesse and technical skill. Despite initial reluctance, Mike agrees to be managed by Steve, driven by a mysterious, urgent need for money.

Chapter 3 - White-Hot Fighting Fury: Mike's career, fueled by his incredible stamina and power, begins to take off. However, his lack of boxing technique and reliance on sheer force are highlighted as potential flaws. Despite this, Mike's determination to fight and win for the sake of a mysterious personal goal remains undeterred.

Chapter 4 - Iron Mike's Dread: The narrative delves deeper into Mike's personal life, revealing his love for Marjory Walshire and his motivation to fight: to provide for her and lift her out of poverty. This chapter exposes the emotional depth and complexity of Mike's character, showcasing his vulnerability and the sacrifices he's willing to make for love.

Chapter 5 - The Roll Of The Iron Men: Mike's fights become more brutal and his fame grows, yet so does the toll on his body. His relationship with Marjory becomes strained as his physical condition worsens, and his resolve to continue fighting for financial security begins to impact his health and future prospects.

Chapter 6 - A Cinch To Win!: Despite warnings from those closest to him, Mike's obsession with fighting and winning for Marjory's sake leads him to a pivotal match against Iron Mike Costigan. His unwavering commitment to his cause and the lure of the ring push him to risk everything.

Chapter 7 - Framed: In a shocking turn of events, Mike is drugged before his fight with Costigan, leading to his first and only knockout. It's revealed that Marjory, desperate to save Mike from further harm, was behind the act. The story concludes with Mike acknowledging the true cost of his ambitions and choosing love and life with Marjory over the destructive path of his boxing career.