She wants to escape it all. She runs from it. She gets a chance to leave it all behind. And she does, without thinking twice. Gabrielle leaves France, her home country, when she finds an offer to babysit in London. She doesn't have a lot of experience with kids, but she's willing to do whatever it takes to just disappear from the world she somehow got sucked into. She comes to a rich family, who has a daughter and a son. She gets a big surprise when she arrives there. The little girl might be little indeed, but the son is nothing like she expected. He's all tall and broad with tattoos marking almost every inch of his skin. And he screams bad news. Alexander shows he doesn't like Gabrielle from the first time he sees her. However, they somehow just can't ignore each other as much as they'd like to, even though Alexander told Gabrielle to never involve in his business. But her being stubborn and fearless, she quickly finds out why people call him 'Sin.'