On her half-sister's wedding day, Fia's world shatters. Hazel, the bride, has allegedly eloped with Fia's fated mate, and over the phone he rejects her without mercy. With the Alpha groom ready to unleash war on her pack, and spurred on by her stepmother's pleas, Fia makes a desperate choice; she takes Hazel's place at the altar.

But the marriage is nothing more than a cruel setup. Betrayed by her family and accused of stealing her sister's happiness, Fia becomes the perfect target for Alpha Cian's wrath. Humiliated and furious, he vows to keep her as his mate not out of love, but revenge. He swears he will break her, torment her, and make her pay until the end of time.

What neither of them expects is that hate can twist, burn, and evolve into something far more dangerous. Between lies, betrayal, and a growing bond neither wants to acknowledge, Fia and Cian are bound to discover that the thin line between hate and love is meant to be crossed.