Trained since birth in a secret facility, a boy is created to infiltrate a fantasy world and steal the legendary Helios Diamond, the key to opening stable portals between worlds. But upon arrival, he rebels and is killed—only to revive in a new timeline beyond his creators’ control. Now armed with a power meant to be a leash, he is free for the first time, navigating magic, kingdoms, and destiny as the world’s most dangerous runaway weapon.