Astra is a "wolfless" scavenger from the smog-choked Grey Zone, a girl who has spent her life hiding a secret that could get her killed. When her brother falls ill with a deadly silver-rot, she makes a desperate choice: break into the high-security vault of Dante Sterling, the city’s most ruthless Billionaire Alpha. Caught in the act, Astra expects prison or death. Instead, Dante offers a dark bargain. To pay off her debt and save her brother, she must sign a "Debt-Bond" and live in his penthouse as his personal aide. But as the moon rises, Dante realizes Astra isn't just a thief, she carries the forbidden Lunar Bloodline, making her the fated mate he’s been hunting for a decade. Trapped in a world of high-society wolves and corporate blood-feuds, Astra must choose: will she remain a scavenger in a golden cage, or will she embrace the power that could bring the Sterling Empire to its knees?