During the troubled times of the Republic of China, the situation in Shanghai was treacherous. Liyan, a rich young lady from a well-off family, is innocent and playful, ignorant of the dangers of the world. Xiao Ce, a feared drug lord in Shanghai, looks cold and cruel on the outside, but is actually hot inside. By chance, Li Yan accidentally ran into Xiao Ce's underground business, and the gears of fate began to turn. He originally wanted to silence her, but was moved by her innocence and came to her rescue. After that, Liyan fell into trouble under the pressure of her family, and Xiao Ce rescued her time and time again, and secret love arose. However, the identity gap and the encirclement and suppression by various forces make their love path full of thorns. Can the two break through the obstacles and work together to write their own legend?
