Ep 3. The Enemy Within

In Stargate SG1 season 1 episode 3, titled "The Enemy Within," tensions rise as the team discovers that a Goa'uld has managed to infiltrate their ranks.

The episode opens with SG1 returning from a mission on a planet where they found a sample of a mysterious substance that could be used as a new energy source. Upon their return to Earth, the team members are put through a routine medical examination, during which it is discovered that one of them has been implanted with a Goa'uld larvae.

The Goa'uld, a parasitic creature that takes control of its host's body and mind, is a known enemy of the Stargate program. SG1 immediately begins an investigation to determine which team member has been infected and how they came into contact with the creature.

As the team searches for answers, tensions rise and trust is put to the test. Each member of SG1 becomes a suspect, and they must work together to both uncover the truth and prevent the Goa'uld from taking over Earth.

Meanwhile, the infected team member begins to struggle with the Goa'uld's control, leading to intense and emotional scenes as they fight to regain control of their own body. As the stakes grow higher, the team must make tough decisions and risk everything to save themselves and their world from an insidious threat.

"The Enemy Within" offers both action-packed and emotional moments, as well as important character development for the members of SG1 as they face an enemy from within their own ranks. The episode sets the tone for the show's ongoing battle against the Goa'uld and establishes the importance of trust, teamwork, and sacrifice as the key to their success.