Three persons are needed to make a Tenctonese child: the man, the woman and a man who serves as a catalyst during sex. There are only a few of these Binnaums, which makes them a target for human racists trying to extinguish the Tentonese race on Earth.
original airdate--November 13,1989
"That was the scene in California's Mojave Desert five years ago--our historic first view of the Newcomers' ship. Theirs was a slave ship, carrying a quarter million beings, bred to adapt and labor in any environment. But they'd washed ashore on Earth, with no way to get back to where they came from. And in the last five years, the Newcomers have become the latest addition to the population of Los Angeles."