Tracy Westerholm

The story of Stargate SG-1 begins about a year after the events of the feature film, when the United States government learns that an ancient alien device called the Stargate can access a network of such devices on a multitude of planets. SG-1 is an elite Air Force special operations team, one of more than two dozen teams from Earth who explore the galaxy and defend against alien threats such as the Goa'uld, Replicators, and the Ori.

He's everyone's favorite action hero... but he's a hero with a difference. Angus MacGyver is a secret agent whose wits are his deadliest weapon. Armed with only a knapsack filled with everyday items he picks up along the way, he improvises his way out of every peril the bad guys throw at him. Making a bomb out of chewing gum? Fixing a speeding car's brakes... while he's riding in it? Using soda pop to cook up tear gas? That's all in a day's adventures for MacGyver. He's part Boy Scout, part genius. And all hero.

An underground government facility is locked down by its A.I.-controlled computer when an alien entity travels through a dimensional portal and threatens the lives of everybody inside.