SG-1 is along for the ride on the Prometheus' shakedown cruise. [The ship apparently survives its conflict with the Replicators in this January's "Unnatural Selection"] Colonel William Renson has been given comand of the vessel and Major Erin Gant is his second. Early in the trip the Prometheus runs into trouble and is forced to land on the planet Tangea, much to the surprise of the locals. The Tangeans are very suspitious of these aliens and things are tense.
SG-1 knows that this planet appears on the Abydos cartouche, and with the Prometheus beyond their ability to repair it without help from Earth, they want the Tangeans to show them where their Stargate is. Unfortunately, the Tangeans have never seen a Stargate and are sure it's a myth!
O'Neill must try to win the Tangeans' trust and convince them to allow the team to look for the gate. President Ashwan agrees to let them look, but the team quickly discovers that there is no trace of the Goa'uld ever having been on this planet and no sign of there ever having been a Stargate here. It looks as if out heroes are well and truly stranded.
Jonas and Teal'c are again paired in this episode to amusing effect, and the "banquet" scene aboard the Prometheus should prove amusing if it comes off as well on screen as it does on paper.
SG1_Spoilme adds this about the episode: "The Prometheus reappears in this episode regarding an off-world gate hunt. Earth is leveling the playing field with the Goa'uld as they now have their own spaceship, the Prometheus. However, they soon encounter problems on its shakedown cruise that could leave them stranded a long, long way from home.
"Assistance may be provided at a planet that possesses a Stargate -– the only problem is that the population denies its existence. The team soon finds themselves embroiled in the population's tragic history and long-hidden desires -– which could spell doom for their world if some people get their way."
Other characters include Navigator, Kalfas (a Tangean official) and Solamon Tarak (a Tangean professor of mathematics). "Memento" airs in early 2003.