Except for his family, Ace Kane Gabriel was wary of everyone. When he nearly killed his real family, he learned his lesson. He built a massive wall to keep people out of his life and destroyed his trust in himself, but, what if this vigilant Mafia boss fell in love with a person who attempted to kill him? Riyana Ziell was raised to be a cold-blooded, emotionless killing machine. On her job, she was the best of the best. She had been trained not to feel or pity anything, but when she attempted to kill Ace for the first time, she felt something strange inside her heart. Will Riyana allow herself to drift into this emotion,or will she abandon her mission to assassinate Ace? *Ace Kane Gabriel is Alyona Karina Gabriel-Zchneider's Older brother