The plot of Stargate SG-1 picks up a year after the conclusion of the events recounted in the original feature film. It follows the present-day adventures of SG-1, a military team from Earth. SG-1 and a dozen other SG teams venture to distant planets using a fictional alien portal known as a Stargate, which in the series is housed in a top-secret United States Air Force military base known as Stargate Command (SGC) in the underground Cheyenne Mountain Complex in Colorado Springs, Colorado.
Patricia Arquette stars as Allison DuBois, whose skills as both a medium (i.e., she sees dead people) and a psychic (she can fairly accurately read minds and predict future events) make her an invaluable help to the Phoenix district attorney (Miguel Sandoval). But like most characters possessed of extraordinary powers, Allison isn’t entirely comfortable in her own skin; plagued by awful nightmares (one of which kicks off every episode), she tends to become cranky and depressed, has a hint of a drinking problem, and regularly gets into it with her supportive but skeptical husband, Joe (Jake Weber).
During an exclusive tour, a power breakdown inside a secret prison known as the Death House sends two agents fighting through a labyrinth of horrors while being pursued by a ruthless army of roaming inmates. As they fight to escape, the agents push toward the lowest depths of the facility where they learn a supernatural group of evil beings is their only chance for survival.
Lee Kang-Woo is a handsome guy, who enjoys being the center of attention. In his past, he was dumped for being ugly. Since that moment, he has been obsessed with his appearance. Joo Seo-Yeon is an enthusiastic P.E. teacher. She does not like handsome men, because she went through a lot of trouble due to her 3 handsome brothers. Her ideal guy is someone who is closer to normal. Lee Kang-Woo and Joo Seo-Yeon happen to meet. They initially argue about everything, but they develop romantic feelings for each other.
