The third season of Star Trek: Enterprise focuses on Enterprise NX-01's mission to prevent a second Xindi attack from destroying Earth. Unlike the show's second season, Enterprise's third season embraces a heavily serialized format dedicated to the search for the Xindi primary weapon. Additionally, Archer, Trip, and T'Pol receive considerable character development throughout the year. The season concludes with the destruction of the Xindi weapon and the beginning of a brief story line that will bring the unpopular Temporal Cold War to an end the following season.