When Peter learns that Mort's pharmacy runs a tab system, he goes crazy buying everything he can get his hands on. Unfortunately, he doesn't realize that he eventually has to pay for everything, and ends up thousands of dollars in debt. Peter makes an offer to sell Meg to Mort's son Neil in exchange for canceling the debt. Mort agrees, but Neil has already found a new girlfriend. Stewie, meanwhile, falls in love with his new babysitter.