I unexpectedly received a package. The name was slightly wrong and so was the address, but it was so close that the package had to be intended for me. I discovered a powerful substance in the package.
Pa had three sons who courted the girls at the neighboring farm. It was hard for them to pick three out of the five girls to marry. The girls had two sisters left behind so Pa marries both the two remaining girls. (I guess you can do that in fantasies and on scattered farms). Pa had to trade his daughter Annie in marriage to Zeke, the father of the 5 girls. Who gets which girl Pregnant is the essense of the story.
When one member of a cover band loses his wife to another woman, it triggers a chain reaction that over the course of one day turns the band into a sort of group marriage, with the option to expand by adding someone's mother.