From middle-grade darling Anna Staniszewski comes the story of a girl who might just have being popular down to a science. Lily loves science and hanging out with her best friend, Katie. But after a really embarrassing incident, she jumps at the chance to switch schools. She's ready to start over. With the scientific process, anything is possible!After a summer spent coming up with theories and prepping for the switch, Lily starts her new school as Blake, a popular girl with a cool name, ready to climb the social ladder.But every hypothesis has its flaws, and Blake will have to adjust her experiment as she adjusts to her new classmates. And when Katie suddenly shows up in Blake's world, things get messy. Who's got the winning formula: Blake or Lily?