Aires, an assassin, has been controlled as a lethal weapon for years by Victor, the young heir of the Drake family, who claims to have saved her life. Danter, Victor’s paternal uncle, is the true leader of the underground Night Owl syndicate and has secretly loved Aires for five years. When Victor pushes Aires to the brink of ruin to secure his power, Danter intervenes to save her and reveals the long-hidden truth: it was Danter, not Victor, who rescued her all those years ago. Awakened to the deception, Aires breaks free from the Drake family. With Danter’s support, she reclaims her rightful glory. The two stand side by side to dismantle the family’s sinister plots and finally find loyal companionship in each other.