"How could an ex-gang leader be a detective?" Ji Tian City was a big home for crimes and serial killers and the police were nothing but dogs under the "big heads" of the country. Detective Ye is a young man with a very dark past. After having a life full of sins he finally decided to use his skills for one last time and fight against the injustice his country started living with, but little did he know what was waiting for him after taking such a responsibility. The past is a hard thing to forget, especially if it leaves big traces in anyone's life. While he was working on one of the most complicated cases he ever handled, Ye Xiao Xie met a person who hated him along with the police to the bone. Therefore, his past came back to life. However, after seeing their past self in each other. Both of them understood that they were meant to save each other in any way. That person was a handsome and genius mathematics professor in one of China's biggest universities and also one of the richest men in the world. That man did have many deals with Ye Xiao Xie's past and present and this last one did also have a lot to do with him. They wished to walk on the same road, but their lives were the complete opposite. They are on different sides now. "Being a sinner became an easy thing for me, and living in the darkness of crimes had always been my fate. I'm not like you, lucky Ye Xiao Xie." "Come back with me, I can show you the light, and break that fate. Qian Deming, you are no longer alone, I'll be always with you..."