The team returns to Earth with a piece of technology that allows them to see alien creatures everywhere, and must attempt to contain the problem when it spreads beyond the…

SG-1 attempts to save a planet’s inhabitants from Nirrti’s genetic experimentation, but find themselves to be her next victims.

SG-1 must adjust to a new commanding officer when General Hammond steps down — but O’Neill discovers foul play behind the general’s resignation.

An alien artifact causes Daniel to disappear, and the team looks for help from his institutionalized grandfather.