On her 24th birthday, Isolde Cassian walked in on her boyfriend buried deep inside her own mother, a raw, devastating betrayal that destroyed everything she thought she knew. Fleeing into the night, she crashes into Damien Blackthorn, the ruthless 42-year-old CEO whose empire her boyfriend helped loot through a sprawling Ponzi scheme. In exchange for crushing those who ruined her, Damien offers a merciless Debt Contract: one year as his live-in shadow executive, collared by a biometric necklace that tracks her every vital sign and delivers punishing pleasure or pain for defiance. What begins as cold financial domination and a forbidden, drunken claiming ignites into dangerous obsession. But Isolde’s perfect memory holds dangerous secrets, and the deeper she falls into Damien’s world, the more her mother’s hidden sins unravel everything. In a story of taboo age gaps, erotic power play, and stained legacies, Isolde must decide if the ultimate currency is revenge… or surrendering to the one man who might truly redeem her.