To save her pack from ruin, Elle Ford agrees to a political marriage with the most feared Alpha on the continent—Trevor Blackwood, the man known only as the Beast of Blackwood. She expects a ruthless tyrant. Instead, she finds a man who barely speaks to her... yet somehow always knows when her life is in danger. As she struggles to survive inside Blackwood territory, Elle uncovers ancient werewolf laws, forgotten bloodlines, dangerous political alliances, and a centuries-old secret powerful enough to destroy every Alpha alive. But the greatest mystery isn't why someone wants her dead. It's why the Beast Alpha looks at her as though he's been waiting for her all his life.

Living a modest life in the province with her mother and stepfather, Mary Etienne Gallo had no idea she'd met Cauis Apollo Fiasco, who would go on to become her best friend and companion. Her monotonous and uninteresting life was transformed into something vibrant and lively. Despite their young age, the two swore that they'd marry each other. Both of their parents aren't against them either. Everything's going fine, not until Cauis’ parents get into an accident. His mother passed away and his father became crippled. But it's not the end of it. Cauis learned something his parents had hidden him. His parents are engaged in an underground business and that, they're not just an ordinary rich family. They are more than that. And to add more to what he had already learned, his parent's accident was plotted by one of their rivals from that world. As he was too broken and lost, he decided to fix himself and finish the business his parents had left. He had to part ways with Mary Etienne in order to accomplish that. Even though he doesn't want to, he must since, if he insists on keeping her with him, he will only endanger her life. In Cauis’ absence, so much had happened in Mary Etienne's life, her biological father appeared. Her father trained her to become an assassin and she became part of the underworld. As when Etienne’s losing hope for Cauis to return, he suddenly showed up. Sa muli nilang pagkikita, maghari na kaya ang pag ibig na meron sila sa isa’t isa? Paano nila mapapanitili ang pagmamahalang mayroon sila ngayong pareho na silang parte ng magulo at marahas mundo? At paano kung ang mismong mundo na kinabibilangan nila sa kasalukuyan ang siyang kanilang magiging kalaban?