The business tycoon Frank Foster comes from a prestigious family. He is strikingly handsome with a pair of deep, captivating eyes that have won the hearts of countless young women. The only regret is his early marriage, as he was married off at a young age according to his family's arrangements. It is said that Mrs. Foster was chosen by the Foster family patriarch for a business marriage with Frank Foster. There is no emotional connection between the couple, and they live separate lives. They barely see each other except at family gatherings, and a divorce is inevitable. Everyone, including Mrs. Foster herself, Emily, believes this. Although Emily and Frank Foster’s relationship is not as distant as rumored, they even share a bed amicably when Frank Foster is home, they have an unspoken rule: the left side of the bed belongs to Frank Foster and the right side belongs to her. Emily consistently adheres to this boundary, sleeping obediently on her side every night. One day, after Emily finished her shower and was scrolling through her phone in bed, her delicate feet accidentally crossed over to Frank Foster's side. In an instant, her slender ankle was seized by a warm, strong hand. Frank Foster yanked her ankle and dragged her over to his side of the bed. His deep, piercing gaze fixed on her like a predator, his voice low and menacing, "Mrs. Foster, you’ve crossed the line." Crossing the line meant she was now his. On their first night of marriage, Emily drew an imaginary line down the center of the bed, clearly marking their territory. Frank Foster had been watching her closely for months and had finally caught her crossing the line.