Tae Xu believes if there is a person in this world who is always against him, then there would have no one but Charles Duan. This guy likes to irritate him anytime and anywhere by calling him "toy boy", grabbing away his bro, and stealing the woman he likes. However, all of them feel that Charles is charming and popular. Tae believes that it is necessary to get rid off him. He is the actions-speak-louder-than-thoughts kind of person. But why Charles enjoys so much about Tae's revenge? Out of surprise, Tae could not help but also is in favor of him. For those who are in the underworld, life is in danger at all times. Tae and Charles, they both have inexpressible secrets and goals for which they can never give up even though they've fallen in love with each other.