Cassian Vane is many things: hero, menace, professional headache to the League, and the last person anyone wants handling a situation delicately. Reckless, loud, and completely incapable of following orders, he crashes through life with a grin on his face and enough confidence for ten people. Villains dread hearing his name. His superiors dread seeing it in paperwork. Somehow, despite the chaos that follows him everywhere, he always saves the day. To the public, Cassian is an unpredictable force of nature—a man who treats world-ending threats like minor inconveniences and responds to danger with sarcasm, bad jokes, and an alarming willingness to throw himself through walls. Beneath the bravado, however, is a fiercely compassionate hero who genuinely believes people are worth saving. He doesn’t fight for fame or glory. He fights because someone has to. Everything changes when a young woman falls into his world from another dimension and mistakes him for a monster. In her reality, Cassian Vane is not a hero but history’s greatest villain: a cold, ruthless tyrant she spent years helping defeat. Faced with a version of himself capable of unimaginable cruelty, Cassian is forced to question whether heroism is truly who he is—or simply the result of a different life. As the two grow closer while searching for a way home, they discover that the line between hero and villain may be far thinner than either of them wants to believe.