Oscar Schmidt is a klutz and gravity is his nemesis - it pulls him down, trips him up, and helps the neighborhood bullies make his life all-around awful.

But when Oscar finds an abandoned train caboose one day after school, everything changes.

Inside, he discovers a magical potion: Dr. Oopsie's Amazing Gravity Repellent. Along with his best friend, Asha, Oscar learns what happens when he defies the laws of nature.

But when the caboose comes under attack from a group of bullies, Oscar's reaction puts his worst enemy in serious danger.

Oscar must face the consequences of his actions, figure out right from wrong, and learn how to stand up for himself.