The life cycle of a Skrit'Na.
One of the oldest races in the universe, but they are quite primitive for being so old. The entity called "Father" said that the Skrit'Na are a useless species.
They wander the galaxy, possibly galaxies, collecting "junk" from thousands of worlds. Sometimes they kidnap members of a species, fly around for a while, then dump them back on their world. Other times, they perform pointless medical experiments on them, including anal probing. A few are taken to Zoos on the Skrit'Na home world.