Stargate SG-1 S01 E22 Within the Serpent's Grasp (2)

"Saving the world... one episode at a time"

SG-1 escapes through the Stargate before it is shut down, and learns that Daniel's alternate reality vision is true: Apophis is moving to attack Earth from above. The team must stop Apophis and his son, Klorel, who inhabits the body of their friend Skaara.