Tally lives in a small town with all ugly people. She dreams to be in New Pretties Town with all the pretties. Then she meets Shay, and they become best friends. Shay wants to run away and be ugly forever but Tally wants to be pretty.
Shay and Tally fighting over being pretty or not.
Tally sneaks over into New Pretties town for a party to see her old best friend Peris. She has been caught so she has to escape and she pulls the fire alarm and jumps off the roof. After becoming best friends with Shay they explore the Rusty Ruins. Then Shay runs away to The Smokes.
Tally sent by Special Circumstances to find Shay or else Tally cannot become pretty. Special Circumstances capture all the runaways and turn them pretty.
After David and Tally find all the Smokes people/runaways, shay who is now pretty and tally who is ugly are going to turn themselves into the goverment.
Tally wants to be pretty to overcome the Special Circumstances against Davids will and Maddy, Davids mom can cure the pretty disease.