Dave and Rebecca are worried that with grandparents living in the house, their kids are too spoiled. When Asher loses his first tooth, Deb and Stew interfere with the tooth fairy and prove Dave and Rebecca right. Joanna lies to her new girlfriend about being a much more involved aunt than she actually is. 

After agreeing to buy a minivan, Dave goes back on his word to Rebecca. Deb encourages Rebecca to get it anyway and keep it from Dave. Stew convinces Dave not to tell Rebecca the real reason he didn't want to get the van.