When Lola gets injured, and cannot compete in the "Miss Prim & Perfect" pageant, Lincoln trains Lana to take her place, without her knowledge.
Lincoln is training Lola to compete in the "Little Miss Prim & Perfect" beauty pageant, whose grand prize is two season passes to Dairyland. Unfortunately, while training, Lola slips on a discarded can of perfume, and breaks her leg and hand. Lincoln is devastated, as this means he will have to forget the Dairyland passes, until he realizes that since Lana is Lola's twin, he can make her look like Lola, and take her place at the pageant. However, they can't let Lola know, as they don't want to suffer her extreme wrath.
For the next few days, Lincoln trains Lana to look and act girly, following a book by pageant expert Gil DeLily, whilst trying to get her to resist her urges to fix things and perform gross acts. On the day of the pageant, Lincoln sees that it's going to be televised on the Princess Channel, and he expresses relief that the house doesn't carry it. However, Dad has just bought the Princess Channel for Lola and she is furious when she sees that her twin is posing as her.
During the show, Lana displays some of her un-girlish traits while performing, much to both her embarrassment and her brother's frustration. After Lincoln blasts her for not letting go of her habits and potentially costing them the Dairyland tickets, Lana admits to him that she can't help it and that she can't be like the other girls at the pageant. Feeling guilty about his selfish actions, Lincoln apologizes to Lana, and allows her to be herself, even if it means not winning the tickets.
As Lana goes onstage and does an act involving armpit farting, Lola shows up backstage and angrily confronts Lincoln about putting her pageant career on the line. However, the judges and audience respond enthusiastically to Lana's performance and she wins the pageant. Impressed, Lola allows her twin to keep the tiara she won and lets her and her brother go to Dairyland, leading to Lincoln and Lana being excited. The episode ends with Lincoln and Lana riding the park's new "Milk Shaker" roller coaster, which causes Lincoln to throw up and get covered in his own vomit, much to Lincoln's disgust, and Lana's amusement.