Eighteen years ago, a deliberate baby swap entangled the fates of Fiona, CEO of the Blackwood Group, and her assistant, Allison. Eighteen years later, at the coming-of-age ceremony, Allison publicly exposes the "truth," intending to reclaim her daughter and swallow the entire corporation. However, the real game has only just begun—Fiona has long known everything. With her biological daughter raised in abuse, and the man beside her in bed revealing his fangs, in this chess game of revenge revolving around bloodline and greed—who will walk away unscathed?