To save her leukemia‑stricken younger sister, ordinary girl Bella signs a one‑year contract marriage with Nicolo, heir to a New York mafia family. This transactional marriage conceals dark conspiracies. Bella turns out to be the sole survivor of the slaughtered Gallo clan, while Nicolo marries her to investigate old family crimes. Amid constant dangers and misunderstandings, they fall for each other. They must fight power‑hungry uncle Luca and hostile forces, and uncover buried secrets about their parents’ deaths and Bella’s alive birth‑mother. Evolving from a pawn to a formidable female don, Bella survives betrayals and life‑or‑death trials. The pair find love despite bloody feuds.
