Serine montero is a top hired secret assassin in the whole world. everyone bow down their heads when they see Serine. not until..she died in her clumsy action. When she wake-up she didn't expect too be Reincarnate in a novel. A novel with full of mystery, action, killer and dangerous people. What will happen when Serine, the girl who have no fear well meet the dangerous people in novel? Can she survive in the though she can't even win in the male leads?