 When Dr. Daniel Jackson ascertains the planet most likely to contain the Holy Grail-weapon which hopefully can defeat the Ori, Colonel Mitchell, Sam, Teal c and Dr. Reimer search there in caves, but the only thing they discover is that the legend s mysterious  curse  is actually a fatal parasitic disease which infects them- their only hope is to identify local wildlife s immunity. Back on the base, Daniel convinces General Landry that, although the Pentagon wants to exclude Vala, her unique knowledge can be invaluable, so she is extensively tested.