Nica Marino, codenamed "Poison Rose," is a mafia heiress and elite assassin. Disguised as a sweet university student, she's sent to eliminate Alessandro Genovese—the heir of a rival crime family. But Alessandro isn't who he claims to be either. Both are undercover, both hiding secrets—and yet, they fall in love in the shadows of New York. As betrayal and family vendettas unravel, they face an impossible choice: kill each other, or escape everything together.