Lisa LaBorde has two daughters, and having grown up an only child, she can't understand why they fight all the time. Her idea of sisterhood is more like a scene from The Sound of Music. Wanting to create that kind of bond for her girls, Lisa decides to enlist the aid of science to see if she can turn these enemies into friends—in just one month.
Continuing from our prologue, host Ira Glass checks in with Lisa and her older daughter, Kennedy, to see how the experiment went. After a month, they've charted surprising results, learned that the girls aren't the only ones in the house who need to change, and found out just how much money it takes to get a twelve-year-old to play with a five-year-old.