High Quality Content by WIKIPEDIA articles! "The Old Man and the Lisa" is the twenty-first episode of The Simpsons` eighth season, first aired by the Fox network on April 20, 1997. In the episode, Mr. Burns becomes bankrupt and asks Lisa to help him become rich again. On the condition that he will lose his evil manners she helps him, and the two start making money recycling cans. After a while Mr. Burns has made enough money to start his own recycling plant. However, his true colors are revealed when Mr. Burns shows that, inside the plant, he makes a multi-purpose edible compound made of squished sea life. He then sells the plant for US$120 million and offers Lisa 10% of his profits, but she declines.