When Homer disappoints Lisa one too many times, he tries to make it up to her with one grand gesture: He buys her a pony. Lisa is thrilled, but Homer and Marge are shocked to discover how expensive maintaining the animal can be. Homer is forced to take on another job working the graveyard shift at the Kwik-E-Mart to pay the bills. When she realizes her father is overworked, Lisa decides to give up her pony.