 While rescuing Sub-Commander T 'Pol from a spatial anomaly, Captain Archer is infected by subspace parasites in his cerebral cortex, resulting in anterograde amnesia. His condition prevents him from forming new long term memories. This allows him to remember everything prior to the accident, but any new memories fade within a few hours. It soon becomes clear that Archer is not fit for duty, and he is subsequently relieved of his command. T'Pol is granted a field commission to Captain, but the mission fails and Earth, alongside every other human colony, is destroyed by the Xindi weapon. The few surviving humans form a convoy, led by the Enterprise, which travels to the planet Ceti Alpha V.
