The SG-1 heads to a primitive planet to recover a UAV exploratory plane. Here they discover that the planet's simple, friendly denizens are growing seriously ill at an alarming rate. Only after several members of the SG-1 team begins suffering from the selfsame illness do they make a horrible realization: The plague has been brought about by their own UAV, which crashed into an infected plant and released a deadly virus. ~ Hal Erickson, All Movie Guide