Megan has spent forever planning her positively purple birthday sleepover. She's even made glittery purple invitations for every girl in her class. Then a new girl, Alexis Powell, joins their class. Alexis seems perfect: She's smart, pretty, and rules the soccer games on the playground. But no matter how hard Megan tries to be a friend to Alexis, the new girl is aloof or rude. At first Megan thinks Alexis is shy. Then Megan starts to fear that Alexis...