Shy, overweight Melinda Rhodes' sophomore year of high school isn't going so well. Her own mother mocks her weight. Her pants split in the middle of school, earning her the nickname, "Moolinda." She then loses first chair flute in band to Kathy Meadows, her pretty and popular nemesis.

Her luck changes when she catches the eye of Josh Kowalski, a rebellious trumpet prodigy and class clown. Josh has also been hurt by Kathy and asks Melinda to help take Kathy down. Mel figures that she has nothing to lose ... and Josh is adorable with gorgeous blue eyes and a winning smile. She agrees to team up with him and looks forward to finally getting back at her rival.

At first, the pair's pranks are silly, and as they work together, Mel comes out of her shell. Even better, she finds herself falling for Josh and it appears as if he might feel the same way about her.

However, their schemes become more and more dangerous and Mel is surprised to discover her dark side. Just how far will she go to get what she wants -- and is Josh really worth the risk?