Intro. Minho is a billionaire and the boss of the most powerful mafia, a man who does not seek love but permanence: someone capable of surviving at his side without breaking down or trying to dominate him. His casino is the place where he observes and discards possible couples, but no one meets his demands until Jisung appears, a silent, extremely intelligent and analytical young man, capable of mapping spaces in seconds and hacking any system. Jisung bursts into Minho's life by breaching his base in just fifteen minutes, an act Minho interprets as a direct provocation. However, Jisung doesn't hate him; That's their way of setting interest. The problem is that Jisung is the son of his biggest rival and has a girlfriend who works as a cover imposed by his father. One night, without her present, Jisung allows himself to be captured and taken to the casino, where he begins a dangerous game with Minho. They both sign a marriage based on possession and security, but far from losing freedom, Jisung gains it, and loves