SG-1 visit another world, Katal which is an Asgard protected planet. Trouble is to get to the planet they have overridden the safety protocols of the Stargate which means they go right through the world's sun, depositing some heavy elements there which affects the sun's reaction and causes and ecological disaster on the planet, turning the sky red. It was an accident but SG-1 feel responsible. When SG-1 go to ask the Asgard for help, Freyr, the Asgard pretending to be their god allows them to meet with the Asgard High Council. However, they decide that they cannot do anything about it as it would nulify the treaty with the Goa'uld, meaning they would be free to attack all the protected planets.

Carter makes a plan to send another more stable element into the sun using a rocket, however things go bad when the local people sabatage the rockets killing two of their men. Even still they decide to help by trying to make the element pass through the sun like they did when they first visited. When it becomes apparant that it didn't work, they start to walk away, however suddenly the sky started turning to the normal colour.

It seems the Asgard were able to help after Sam was able to give a viable reason to why the planet was saved.