Eighteen-year-old Jack Bailer never planned on being a hero. But when his brilliant uncle vanishes into a parallel dimension, Jack is thrust into a secret government mission to recover three medallions-keys that could reshape the universe itself. Joined by friends and a team of global specialists, Jack must navigate through a dystopian world ruled by the ruthless descendants of Hitler. Betrayal, sacrifice, and dark secrets await behind every door. And if the medallions fall into the wrong hands, Jack must face an impossible choice: Save his team-or risk everything to save the world. Across fractured worlds, one boy holds humanity's last hope.