Heartless assassin Aero Black can't be bothered to remember the names or faces of his victims. After getting a hit on Hailey Romano, he thinks it should be his easiest hit ever since she's best friends with his younger brother. His dead heart becomes his biggest enemy as he gets to know her pure one. Kind, sweet and caring - she's the complete opposite of him. But there is nothing the assassin loves more than money, and knowing he'll get millions of dollars for her death if he kills her within a month forces him into a decision. Money, or potential love?