Megan Collins is a basically normal teenaged girl growing up in Boston, who just happens to have a mother who works for the CIA. Justin Carson is an international assassin, trained in how to kill anything and anyone in a matter of seconds. When they bump into each other for the first time, neither of them dares believe that they will ever see each other again. But when, through a strange series of events, they meet again and begin to fall for one another, Justin is forced to share his past with Megan. Can she overlook all that he's done before he loses his life for a cause he never believed in?