Apu and Manjula are signing up two of the octuplets for Miss Wickerbottom's Pre-Nursery School and after a verbal exchange with Dr. Hibbert, Homer decides they should do the same for Maggie. Because she can't talk, she doesn't pass the initial screening. Afterwards Lisa discovers that even though Maggie can't talk she does show signs of brilliance. Another screening at the pre-pre school shows of her talents and reveals that she has a higher IQ than Lisa. Maggie's new brilliance leaves Lisa searching for a new identity, since she no longer has her status as "the smart one." Lisa tries stand-up comedy, becoming a goth Ravencrone Neversmiles,' cheerleader, rapper, soccer player, cowgirl; none of which workout for her. After she is discovered trying to sabotage her sister's education Lisa leaves home with 2 to her name. She decides to stay at the Natural History Museum, where her family is sure to never find her; however Springfield's "finest" do discover her location and they bring the family to help them find her. An accident gets Marge, Bart and Homer trapped in an exhibit and they look to Maggie to get them out, but Maggie's secret to her brilliance is nowhere to be found.
Season 15 Episode 13 of The Simpsons resulted in a 0.00 rating in the 18-49 demographic.
The Simpsons focuses on a family of five. There is the father, Homer, a dull-witted, alcoholic, lazy, but lovable man. He often gets his family into crazy situations but always manages to fix things. The mother, Marge, is a stay at home mom who keeps the family together. She is the ideal wife and mother though she can be a little naive at times. She always does what she thinks is best for her family.
Next is Bart, the 10 year old boy who lives on playing pranks. He gets into a lot of trouble but is generally a good kid. Then there is the neglected middle child, Lisa. Lisa is the brain of the family and sometimes feels left out because of that. She is an outcast at school because of her talent. Finally there is Maggie the baby. Though she doesn't say much she is well known especially for her red pacifier.