Spirits (S02E13)

The SG-11 team has not returned from its mission to planet PXY-887, where they recently discovered a metal, trinium, that is a hundred times lighter and stronger than steel. Instead, the inhabitants of the planet have fired an arrow made of trinium through the stargate and into the shoulder of Col. Jack O'Neill. With O'Neill in the infirmary, the SG-1 team, led by Capt. Samantha Carter, heads through the stargate to investigate and to negotiate a mining treaty with the planet's inhabitants. SG-1 is knocked unconscious on arrival; when they awake, they meet Tonané, a plainspoken Coast Salish Indian, who explains that the SG-11 team was taken by "the spirits" — the same spirits who give the valuable metal to his people. Carter and the others are skeptical as they address T'akaya, the wolf, and Xe'ls, the raven, even after the SG-11 team mysteriously reappears. Negotiations with the Salish reach a stalemate, and Tonané returns to Earth with SG-1 and SG-11 to consider alternative mining methods. But when Gen. Hammond tells Capt. Conner, the head of SG-11, news of plans by N.I.D. to mine the planet whether the Indians agree or not, strange things begin to happen — as the "spirits," determined to protect the Salish, reveal their true nature. (Metro-Goldwyn-Mayer (MGM))