Memento

On the maiden flight of the finished Prometheus, the reactor overloads, and SG-1 must find the Stargate buried on the alien planet Tagrea in order to obtain spare parts from Earth. Tagrea was once ruled by the Goa'uld Heru-ur, and the memory of his occupation was so traumatic that the Tagreans buried their Stargate and wiped out all traces of their earlier history, so as to make a new start. Despite opposition from xenophobic elements of the Tagrean military, the progressive Chairman Ashwan assists SG-1 in locating the Stargate and eventually opens relations with Earth.