Ep 11. The Fourth Horseman: Part 2

The SG-1 team is on a mission to find the source of a viral plague that has affected a number of planets in the galaxy. In last week's episode, we saw that the team discovered that the Ori were the source of the virus. However, they soon realized that the Ori were planning a full-scale invasion of the Milky Way galaxy, using the virus as a weapon.

In this week's episode, "The Fourth Horseman: Part 2," the team continues to race against time to find a way to stop the Ori invasion. The virus is spreading rapidly, and they must find a cure before it's too late. At the same time, the team is grappling with the fact that they may not be able to stop the invasion from happening.

Meanwhile, Vala (played by Claudia Black) is still being held captive by the Ori. She is being forced to serve as their prophet, preaching their teachings to the people of the galaxy. Vala is struggling to maintain her own sense of identity and morality in the face of the Ori's relentless indoctrination.

As the team races to find a cure for the virus, they discover that one of their own members may be infected. Carter (played by Amanda Tapping) struggles to keep her teammate alive while also working on finding a cure. At the same time, tensions mount between the team members as they grapple with the larger implications of the Ori invasion.

"The Fourth Horseman: Part 2" is a tense and action-packed episode that brings the SG-1 team face-to-face with their biggest challenge yet. With the fate of the galaxy hanging in the balance, the team must work together to find a way to stop the Ori before it's too late.