In the ‘80s, there was a stigma to being in Special Ed. I remember the county opening a center for special needs kids in my high-school building. First, there was an announcement that the regular students were strictly forbidden to enter that part of the building. After that, it took roughly 12 seconds for the name of the center to become an insult to throw at people: "Yaah, you’re a [name of the center]! Hey, [name of center]!"
So this is like Dexter’s Lab and Code Name: Kids Next Door, where the adults are completely oblivious to the super-science shenanigans going on literally in their own houses, right? Not complaining, just observing.
They encounter Roger Smith’s people (from American Dad) and are eaten (Adults get dissected, children get eaten, apparently).