Hope can be a prism of scars from which light shines. Twenty years ago, an infamous scientist created Liquid Onyx, a world-changing chemical which led to the rise of superheroes and supervillains. Jack Roth is not a superhero. He’s an assassin, a killer, a lethal weapon forged and controlled by the evil organisation Obsidian Inc. Leo Snow isn’t a superhero either. He's a British secret agent who spends his life protecting the world and saving everyone he can. When these two men’s lives collide on the streets of Danger City just as Obsidian Inc is gearing up for another cataclysmic scientific discovery, they’ll both need to reckon with their dark past, messy present and potentially hopeful future.