Marge suffers retrograde amnesia after she inhales noxious fumes during a cleaning spree. In hopes of refreshing her memory, Homer takes her around town; however, it isn't until specific stimuli that Marge starts to remember everyone except her husband. Homer plans to kick-start her memory by taking her to the mini-golf course where Bart was conceived but his plans go awry when Marge realizes Bart was conceived at a mini-golf course and decides to leave Homer. After a period of separation and a jump into the singles pool, Marge realizes that Homer was always there for her and takes him back.