Now that the Federation can have regular contact with Voyager, they ask that they look for the Friendship 1 probe that was sent to the Delta Quadrant a long, long time ago. However, when the shuttle team land, they find that the place IS inhabited (despite the sensors) and these people are really angry. They blame the Earth for their plight, as they used the technology that powered Friendship 1 (antimatter) and destroyed themselves. Sure, a few folks remain, but they look nasty and are suffering from the aftereffects of the antimatter explosion. Not surprisingly, these folks are very hostile and soon take some of the away team prisoner. Now they try to use the team as a bartering tool and things get even nastier very quickly.
This episode features some very nice make-up effects. The sore- covered aliens look really realistic and nasty. While the baby didn't look great--the rest of them sure did. In addition, the story is pretty exciting and worth seeing.
By the way, this story seems a lot like an episode from "Space: 1999" concerning a probe powered by a 'Queller Drive'. This system ended up killing things because of its toxic emissions--and soon folks effected by it come looking for retribution!