Lincoln attempts to take the "perfect" family photo as an anniversary gift for his parents, but his sisters' unique personalities keep ruining the shot.
The original photos are chaotic because each sister is acting like herself (e.g., Lana is dirty, Luan is joking, Luna is rocking out). [S1E8] Picture Perfect/Undie Pressure
Lincoln and his ten sisters enter a high-stakes bet to see who can go the longest without performing their most annoying habits. The last person standing gets to stop doing their habit forever, while the losers must continue. Lincoln: Reading comics in his underwear. Lori: Using the word "literally" (and texting). Leni: Over-accessorizing/shopping. Luna: Playing loud music/singing. Luan: Making bad puns and pranks. Lynn: Turning everything into a competitive sport. Lucy: "Spooking" people by appearing out of nowhere. Lola: Being a "tattletale" or demanding pageant behavior. Lana: Playing with trash or animals (specifically frogs). Lisa: Over-analyzing or performing dangerous experiments. Lincoln attempts to take the "perfect" family photo
He tries to "fix" his sisters by giving them scripts and makeovers to make them look like a "normal" family. The last person standing gets to stop doing
After seeing the artificial photo, Lincoln realizes that their "imperfections" are what make them a family. He eventually gifts his parents the original, messy photo, which they love. Part 2: Undie Pressure
Crying or needing a diaper change (though she is the first to "break").