Lulu is upset about receiving a bad grade, so Sadie casts a mood elevating spell to help her get over the disappointment. However, the spell goes wrong and soon Lulu's emotions are affecting gravity throughout Harmony High.

Sadie and the gang are in a baking frenzy - Sadie wants to sell enough cupcakes at the school bake-sale to be able to go on a special field trip, with Sam!