Serena Davidson leads two lives. At school, she's a morbidly obese, stupid, nerdy, bitchy, slutty, and a teacher's pet. But at home she's the scrawny vegetarian pushover. What would possess someone to wear a fat suit every day? And what happens when someone finds out?

Kendall hates everyone in her school but Jack Gilinsky takes the top spot. When she has the inconvenience of having to be his Science partner for 2 months how will she deal with it?