Ordinary office worker Chloe, after catching her boyfriend of seven years cheating, has a one-night stand with dangerously charming mafia boss Aiden—a man who never sleeps with the same woman twice and never believes in love, yet breaks his own rules for her. A contract binds them together: knowing she'll fall for him, Chloe secretly shortens the one-year term to three months, while Aiden indulges in her but refuses to admit his feelings.