Once Upon a Time, It Was Difficult to Find Water in the Sea.

One is a cold female killer, the other is the son of a gang boss, a grudge more than ten years ago, an obsession more than ten years later, who is the real destiny of whom, love and hate, love and hatred, who can tell clearly... Her love journey was bumpy, and she was only waiting for him. He was deeply affectionate and only waited for her. Until the end...