This season of “Sister Wives” has been all about learning how to be a family, despite separate living situations. The Browns are also trying to show how a polygamous family can run normally. If you missed last weeks episode, we have the part one and part two right here.

Tonight, we see that the root of polygamy wasn’t so clear-cut when the wives head to Illinois for a historic adventure. Too bad they are not the happy women they used to be…before Robyn came in to the family.