Melbourne, one spring night, split wide open. On the day Ainsley Sage Whitlock was supposed to marry the golden boy of Australia’s elite, a 4K sex tape of her fiancé sleeping with her little sister blew up across every screen in Federation Square. Five thousand guests. One hundred thousand strangers. And her own mother sneering, “Smile, darling. Sienna's already in your wedding dress.” Instead of calling off the wedding, her bankrupt family simply exchanged brides. Ainsley, the reserved, walks out of the church in tattered lace with blood on her feet. She got herself wasted and fucked a stranger in a penthouse, leaving five scorched hundred -dollar bills. That stranger is Cassian Reid Voss. Melbourne’s hidden king. Cassian dragged her drowning body from the Yarra River at 3:14 a.m., but he wasn't her savior. He's the man dying from the same rare poison that’s been slowly killing Ainsley since five years old. He needs a successor to Inherit his estate and outlast the poisoning. He offered a proposal: Marry me for 400 days. Give me a successor. Then I’ll hand you the matches to burn both our families to the ground. Ainsley signed the contract in her own blood, the same blood that connects her to a scheme she never saw coming. Time is Ticking Blood. The baby inside her womb isn’t Cassian’s. It’s the result of months of calculated, filmed rape engineered by her ex-fiancé. And the vicious stepmother who wants to inherit Voss empty. She’s Ainsley’s real mother, the masterminder behind the poison, the betrayal, and the entire contract. The heir clause meant to rescue Cassian’s life may kill Ainsley first. The clock isn't just ticking, it’s bleeding. Four Hundred Days to revenge. Four hundred nights of raw, spiteful heartbreaking sex in a mansion built on graves. Four hundred chances for a love as toxic as the blood in their veins to grow. When the last day comes, only one question remains: Who gets the empire... and who gets the heart? A scorching, twist-packed, revenge-fueled contract marriage that will leave you gasping, crying, and begging for the next 400 days.