In a pre-marriage interview with a priest at the Catholic church Mike and Molly are supposed to get married in, Molly admits to not being Catholic. The church cancels their reservation and the couple is forced to look for new venues. More importantly, it jeopardizes their relationship when Mike suggests that Molly should be less opinionated. Peggy pushes hard for Mike to not forgive Molly for her opinionated behavior, but Mike stands up to his mom. Eventually, Mike and Molly work it out and go to Nana's Baptist church to make their wedding reservation.