Do the Math

Plot:

Joan is struggling with math when God tells her to take some piano lessons. She agrees to do some cleaning for the cranky piano teacher in exchange for some lessons. While looking for her old piano books, Joan finds some pictures of her dad and a letter that mentions Richard. When she asks her parents about him, they tell her to forget about him, but she asks Luke to investigate. Kevin will not give up hope about neural regeneration even though the doctor says it is unlikely.