Braga and Berman created the season-long Xindi story arc, which began with the second-season finale, "The Expanse," and ran throughout the third season until it was resolved in the episode "Zero Hour." It opens with an attack on Earth by a mysterious space probe that kills seven million people in a destructive swath stretching through Florida to Venezuela. As a result, the Enterprise is redirected to unexplored regions of space to find the Xindi and stop a further attack that will destroy Earth.Garcia & Phillips (2009): p. 275 Although certain elements were preplanned, including the success of the mission against the Xindi, others, such as the details of the actual enemy race, were not. At the time of the initial development, Berman and Braga were uncertain if the storyline would last for a whole season or for just half a season.
Braga and Berman created the season-long Xindi story arc, which began with the second-season finale, "The Expanse," and ran throughout the third season until it was resolved in the episode "Zero Hour." It opens with an attack on Earth by a mysterious space probe that kil:ls seven million people in a destructive swath stretching through Florida to Venezuela. As a result, the Enterprise is redirected to unexplored regions of space to find the Xindi and stop a further attack that will destroy Earth.Garcia & Phillips (2009) p. 275 Although certain elements were preplanned, including the success of the mission against the Xindi, others, such as the details of the actual enemy race, were not. At the time of the initial development, Berman and Braga were uncertain if the storyline would last for a whole season or for just half a season.