She wasn't looking for trouble, but a wrong turn in the city's underbelly thrusts Seraphina into a savage world of sweat and sin she was never meant to see. This is the brutal, lawless world of the underground fight club, and it's the last place her brother, Milo, was seen alive. Desperate for answers, Seraphina's search for the truth ends the only way it can in a place like this: with her thrown into a makeshift ring, facing the club's undefeated and ruthless champion.

Valen is a dangerous force of nature, a man carved from shadows and secrets. He doesn't just defeat his opponents; he owns them. And when Seraphina's defiance earns his unwavering attention, he makes her a forbidden offer she can't refuse. He has the answers she craves, but his help comes at a tantalizing and scandalous price: her complete and utter submission. He will teach her the rules of his dark world, a place where pleasure and pain are two sides of the same coin, and where surrender is an art form.

To save the brother she loves, Seraphina must place her trust in a man who embodies the very danger she fears. She must navigate a provocative game of power, where every touch is a test and every command is a lesson in desire. But in a world where secrets are a currency and every fighter has a hidden past, the price of defeat might be her only path to salvation... or her complete and utter annihilation.