Teal’c is infected with deadly venom from a giant insect, and begins a terrible transformation. When he escapes the S.G.C., SG-1 must find him before Colonel Maybourne does.

SG-1 is imprisoned in a virtual reality realm and forced to relive the worst moments of their lives over and over.

Carter is possessed by a Goa’uld who claims to be an enemy of the System Lords.