Captured, wounded and starving, "Steve" the Wraith finds himself helpless. What he didn't expect is the human potential for sympathy and mercy.
- Part 1 of The Vaccine
After the lanthean biologist Delilah Abbot effectively saves Steve's life and develops a serum to allow the Wraith to feed without killing, Sheppard's team sets out to escort her and her Wraith boyfriend back to the latter's Hive, to spearhead a revolution, and a peace movement in the Pegasus Galaxy.
- Part 2 of The Vaccine