Jack and WW2 spy Ruth cool their heels in Metzger's prison cell far below the surface, while the rest of the team hurries to rescue the duo and prevent the launch of the Omega Bomb. Unbeknownst to the heroes of the future, Metzger has a secret that could change the course of history as we know it. Can Jack and his team of commandos stop the Omega Bomb, defeat Metzger, and escape without altering history?