In a city ruled by vampires and werewolves, humans face danger as prey and slaves. Sage, a strong and mysterious woman, survives by working for dangerous Vampire Lords. Despite her skills, she's feared and despised by humans due to her affiliation. Sage harbors a secret, well-protected but perilous if exposed. Newcomer Alpha Zane, a powerful alpha with a formidable wolf, inherits a casino and is rumored to possess a centuries-old gem of immense power. Supernatural beings are desperate to obtain it. Sage, hired to gather info on Zane, faces disaster when he claims she's his mate. To protect Sage's secret and Zane's gem, they must unite despite their differences, discovering unexpected similarities.