Osric's planet was a planet in Milky Way galaxy which houses a Stargate. It was on this planet that Morgan Le Fay hid the final clues to the location of the Sangraal. In a dream planted by Adria, Vala Mal Doran discovered the address was composed of symbols from the three planets Arthur and his knights traveled to: Castiana, Sahal, and Vagonbrei. Once there, SG-1 encountered Osric, the keeper of the village archives. He showed them the Parchment of Virtues, but refused to give them the map, because Ba'al had previously attempted to steal it. Soon after SG-1's arrival, the Ori appeared, led by a Prior. Presumably to dissuade anyone from searching for the Sangraal, along with destroying the village's recorded history, the Ori soldiers burned the contents of the library. In lieu of the map - now destroyed - Osric offered to show SG-1 the way to the Sangraal. The path travels through the plains and forests of the planet.
While traveling, SG-1 and Osric encountered Ba'al, trapped by one of the many tests set up to protect the Sangraal. After convincing SG-1 he could be useful, he joined the party on the search. The path eventually ended at a cave beneath a mountain. Osric's true colors were revealed, along with his form, that of Adria. SG-1 didn't have the means to harm her, however, so she stayed with the group. The quest continued through the cave, eventually ending with a room that contained a dais with the Sangraal, across a bottomless pit and narrow bridge. The first attempt at taking the Sangraal fell through when it proved to be a hologram, and a dragon appeared. SG-1 eventually defeated the monster. On the second attempt, the Sangraal was still a hologram. This time however all the rest of the party were beamed away through the gate, while Adria was left behind. After traveling back to the village, Adria learned the fate of SG-1 and Ba'al from the Prior. When he also revealed that the village had refused the teachings of Origin, she commanded him to burn the village before leaving. As such, it is presumed that the planet is now lifeless and all that who resided in the village are now dead too. (SG1: "The Quest, Part 1", "The Quest, Part 2")