A cold contract. A ready-made family. And a love that wasn't part of the deal.Nina was just trying to survive and give her young son, Jack, a stable life. Theo was a ruthless, workaholic billionaire who needed to secure his corporate empire and fix his public image. When they strike a high-stakes agreement to form an instant, convenient family, the boundaries are clear: it's strictly business, built entirely on paper.But as the fake smiles for the cameras turn into late-night kitchen talks, and Theo unexpectedly bonds with little Jack, the cold lines of their legal contract begin to blur. Living under the same roof, they find themselves caught between the architecture of a lie and the undeniable architecture of love. When the final terms near their expiration, they must decide if they will tear up the contract or sign up for forever.