After their trip to the parallel universe, the crew of the Enterprise must determine that in the normal universe nothing is like it was. The cybernetic lifeforms of the Red Empire are there and make war against all races to eliminate all biological life.

When captain Archer and the crew of the Enterprise tests a new drive, they were transferred into a parallel universe. There they make acquaintance with the Red Empire, which consists of cybernetic lifeforms who plan to eliminate all biological life, even in the normal universe.