Raina is about to start sixth grade and all she wants to be is a normal girl. One night, however, after a scouts' meeting, she trips, falls, and seriously injures her two front teeth. She must then endure a whole series of dental operations and apparatuses, even a retainer with fake teeth! On top of that, she also has to deal with an earthquake, boy trouble, and friends who turn out to be not what they seem. Raina va a sexto y su único deseo es...

Raina wakes up one night with a terrible upset stomach. Her mom has one, too, so it's probably just a bug. Raina eventually returns to school, where she's dealing with the usual highs and lows: friends, not-friends, and classmates who think the school year is just one long gross-out session. It soon becomes clear that Raina's tummy trouble isn't going away ... and it coincides with her worries about food, school, and changing friendships. What's going...