 T 'Pol is able to communicate with Archer after gaining use of the universal translator . She learns they have been overcome with an overwhelming instinct to reach a city called " Urquat " , the homeland of their species . Meanwhile Commander Tucker and an away team of MACOs , equipped with biohazard suits , manage to capture and return Reed to the ship . Archer and Sato flee and T 'Pol opts to stay with them . Doctor Phlox soon determines that they were infected by a mutagenic virus , and concludes that T 'Pol 's Vulcan genetics rendered her immune . 
