 Due to the intervention of the Sphere Builders, the coalition of Humans, Primates, Arboreals and Aquatics was unable to stop the weapon from being launched. It is now only 10 hours before the weapon arrives at Earth. Only one ship is capable of catching up: the lightning-fast, but nearly powerless ship of Degra. While Archer and a team embark on a seemingly impossible mission, they get some unexpected help. Meanwhile Enterprise is send to keep their promise to the Aquatics. T Pol and Trip still believe the destruction of Sphere 41 will do the trick, but the Sphere Builders are aware of their plans.