Mr. Burns speaks with the Springfield Elementary School "Junior Achievers Club" and after a conversation with Lisa, he realizes that he does not have nearly as much money as he thought he did. He decides to invest in the stock market to earn his money back. However, in doing so, he makes more questionable investments and becomes bankrupt. The bank forecloses on the plant and puts Lenny in charge, and sells Mr. Burns' house to pro wrestler Bret Hart.
Mr. Burns moves in with Smithers and, wanting to be of use, decides to do Smithers' grocery shopping. However, he is unfamiliar with grocery stores and becomes confused by the ketchup and catsup, causing the grocer to send Burns to the Springfield Retirement Castle. While at the home, Mr. Burns meets Lisa again, and begs her to help re-build his empire. She eventually agrees on the condition that he drop his evil ways, and the two begin earning money through recycling.
Whilst at first he is confused at the practice Mr. Burns enthusiastically begins grabbing every can he can find, causing Lisa to believe that he has changed. Eventually, Burns earns so much money that he is able to open his own recycling plant. Burns gives Lisa its opening tour, showing her that it is environmentally sound and made of recycled materials. At first, Lisa is impressed, but then Burns shows her "the best part". He has taken a cue from a demonstration Lisa had given him earlier, and attached millions of six-pack holders together into a net which he uses to catch tons of sea life, in order to make "Li'l Lisa's Patented Animal Slurry", a multi-purpose edible compound. Lisa is horrified, proclaiming Burns not only still evil, but even more evil when he tries to be good, and begins running through the streets, helplessly trying to get the seemingly indoctrinated citizens to stop the recycling program she herself started.
Mr. Burns later visits Lisa and tells her that he sold the recycling plant for US$120 million to a fish stick company, and that he has decided to give her, being his advisor, a 10% share of the profits. Lisa refuses the money and rips up the check. This causes Homer to have four simultaneous heart attacks. While in the hospital, Lisa apologizes to Homer for not accepting the money. He tells her that he understands what she did, but says that the $12,000 would have been a big financial help. Lisa replies that 10% of $120 million is actually $12 million. The hospital's public address system announces a code blue, signifying that Homer has entered cardiac arrest.