In the cutthroat ocean shipping circles of Boston, orphan Grace was forced into a three-year secret marriage contract with shipping heir Julian Stewart by the family matriarch holding business inheritance as leverage. Before their wedding, an anxious Grace embraced Julian's brother Harrison for comfort, an innocent moment witnessed by Julian that sparked three years of bitter resentment and possessive cruelty. While Julian publicly refuses to acknowledge Grace as his wife, he privately confines her in an obsessive, jealous grip. Determined to break free upon the contract's expiration, Grace travels to an abandoned Maine lighthouse to investigate the suspicious shipwreck that claimed her father's life fifteen years ago. Unknown to Grace, Julian's uncle Arthur murdered her father to cover up an insurance fraud scheme, and now sends armed assassins to silence Grace. Will Julian arrive in time to save Grace from Arthur's deadly trap?