April 24th, 2153: A probe sent by the Xindi devastates areas in Florida and the Caribbean Sea, costing 7 million lives, among them Trip's sister Lizzy. According to the Suliban's visitor from the future, the Xindi did that in preemptive self-defense, because their homeworld would be destroyed by humans 400 years hence. They are about to be building an even larger device to destroy the whole planet. Chased by the Klingon Duras, who is going to capture Archer, Enterprise heads back to Earth. Against Vulcan advice, Archer convinces Starfleet Command to send Enterprise against the Xindi, who are supposed to be hiding in the Delphic Expanse, a region of space dreaded by all spacefaring races. T'Pol decides to stay aboard against her orders. Equipped with new photonic torpedoes, Enterprise destroys Duras's vessel and enters the Expanse...

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